64401056012 has 12 divisors (see below), whose sum is σ = 112923269760. Its totient is φ = 32137264656.

The previous prime is 64401056009. The next prime is 64401056053. The reversal of 64401056012 is 21065010446.

64401056012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64401056012² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15813548 + ... + 15817619.

It is an arithmetic number, because the mean of its divisors is an integer number (9410272480).

Almost surely, 2^64401056012 is an apocalyptic number.

It is an amenable number.

64401056012 is a deficient number, since it is larger than the sum of its proper divisors (48522213748).

64401056012 is a wasteful number, since it uses less digits than its factorization.

64401056012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31631680 (or 31631678 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 64401056012 its reverse (21065010446), we get a palindrome (85466066458).

The spelling of 64401056012 in words is "sixty-four billion, four hundred one million, fifty-six thousand, twelve".