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11988920160 = 25355732931
BaseRepresentation
bin10110010101001100…
…00110011101100000
31010221112021020200000
423022212012131200
5144023130421120
65301352100000
7603045066000
oct131246063540
933845236600
1011988920160
1150a2484188
1223a7094600
131190a855c9
1481a376000
154a27d2990
hex2ca986760

11988920160 has 1152 divisors, whose sum is σ = 52835328000. Its totient is φ = 2560481280.

The previous prime is 11988920113. The next prime is 11988920161. The reversal of 11988920160 is 6102988911.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11988920161) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 386739345 + ... + 386739375.

It is an arithmetic number, because the mean of its divisors is an integer number (45864000).

Almost surely, 211988920160 is an apocalyptic number.

11988920160 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 11988920160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26417664000).

11988920160 is an abundant number, since it is smaller than the sum of its proper divisors (40846407840).

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

11988920160 is an equidigital number, since it uses as much as digits as its factorization.

11988920160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 45.

The spelling of 11988920160 in words is "eleven billion, nine hundred eighty-eight million, nine hundred twenty thousand, one hundred sixty".