64037856512 has 72 divisors (see below), whose sum is σ = 154679749056. Its totient is φ = 25830383616.

The previous prime is 64037856473. The next prime is 64037856593. The reversal of 64037856512 is 21565873046.

It is a super-2 number, since 2×64037856512² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1020578 + ... + 1081505.

It is an arithmetic number, because the mean of its divisors is an integer number (2148329848).

Almost surely, 2^64037856512 is an apocalyptic number.

It is an amenable number.

64037856512 is an abundant number, since it is smaller than the sum of its proper divisors (90641892544).

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

64037856512 is a wasteful number, since it uses less digits than its factorization.

64037856512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102123 (or 2102109 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 64037856512 in words is "sixty-four billion, thirty-seven million, eight hundred fifty-six thousand, five hundred twelve".