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128042750160 = 243351317347773
BaseRepresentation
bin111011100111111110…
…0010101000011010000
3110020111112000122121000
41313033330111003100
54044212421001120
6134453320302000
712152006263413
oct1671774250320
9406445018530
10128042750160
114a336881386
1220995311900
13c0c7547a30
1462a957bb7a
1534e60e7990
hex1dcff150d0

128042750160 has 640 divisors, whose sum is σ = 505002677760. Its totient is φ = 29540450304.

The previous prime is 128042750159. The next prime is 128042750161. The reversal of 128042750160 is 61057240821.

128042750160 is a `hidden beast` number, since 1 + 28 + 0 + 427 + 50 + 160 = 666.

It is an interprime number because it is at equal distance from previous prime (128042750159) and next prime (128042750161).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128042750161) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 165643534 + ... + 165644306.

It is an arithmetic number, because the mean of its divisors is an integer number (789066684).

Almost surely, 2128042750160 is an apocalyptic number.

128042750160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128042750160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252501338880).

128042750160 is an abundant number, since it is smaller than the sum of its proper divisors (376959927600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128042750160 is a wasteful number, since it uses less digits than its factorization.

128042750160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172 (or 1160 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

Adding to 128042750160 its reverse (61057240821), we get a palindrome (189099990981).

The spelling of 128042750160 in words is "one hundred twenty-eight billion, forty-two million, seven hundred fifty thousand, one hundred sixty".