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64960207872 = 2103722329647
BaseRepresentation
bin111100011111111011…
…100001110000000000
320012200012002110202220
4330133323201300000
52031014303122442
645501534411040
74456526441100
oct743773416000
9205605073686
1064960207872
112560538670a
121070b060a80
136183295a31
143203557200
151a52e48eec
hexf1fee1c00

64960207872 has 528 divisors, whose sum is σ = 217751016960. Its totient is φ = 17114431488.

The previous prime is 64960207861. The next prime is 64960207913. The reversal of 64960207872 is 27870206946.

64960207872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100401853 + ... + 100402499.

Almost surely, 264960207872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64960207872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108875508480).

64960207872 is an abundant number, since it is smaller than the sum of its proper divisors (152790809088).

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

64960207872 is a wasteful number, since it uses less digits than its factorization.

64960207872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 711 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 51.

The spelling of 64960207872 in words is "sixty-four billion, nine hundred sixty million, two hundred seven thousand, eight hundred seventy-two".