64051517360 has 20 divisors (see below), whose sum is σ = 148919778048. Its totient is φ = 25620606912.

The previous prime is 64051517359. The next prime is 64051517381. The reversal of 64051517360 is 6371515046.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×64051517360² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400321904 + ... + 400322063.

Almost surely, 2^64051517360 is an apocalyptic number.

It is an amenable number.

64051517360 is an abundant number, since it is smaller than the sum of its proper divisors (84868260688).

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

64051517360 is a wasteful number, since it uses less digits than its factorization.

64051517360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800643980 (or 800643974 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 64051517360 in words is "sixty-four billion, fifty-one million, five hundred seventeen thousand, three hundred sixty".