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64195053120 = 2634511613691
BaseRepresentation
bin111011110010010100…
…101100011001000000
320010200212022120210000
4323302110230121000
52022432413144440
645254002440000
74431545643162
oct736224543100
9203625276700
1064195053120
1125252485610
1210536963000
1360908c3343
14316da9c932
151a0aba6730
hexef252c640

64195053120 has 560 divisors, whose sum is σ = 253264879296. Its totient is φ = 15303168000.

The previous prime is 64195053119. The next prime is 64195053127. The reversal of 64195053120 is 2135059146.

64195053120 is a `hidden beast` number, since 64 + 19 + 50 + 531 + 2 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (64195053127) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 17390475 + ... + 17394165.

Almost surely, 264195053120 is an apocalyptic number.

64195053120 is a gapful number since it is divisible by the number (60) 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 64195053120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126632439648).

64195053120 is an abundant number, since it is smaller than the sum of its proper divisors (189069826176).

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

64195053120 is a wasteful number, since it uses less digits than its factorization.

64195053120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3792 (or 3773 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 64195053120 in words is "sixty-four billion, one hundred ninety-five million, fifty-three thousand, one hundred twenty".