51615656001064 has 32 divisors (see below), whose sum is σ = 103335691504320. Its totient is φ = 24111661343616.

The previous prime is 51615656001061. The next prime is 51615656001067. The reversal of 51615656001064 is 46010065651615.

It is an interprime number because it is at equal distance from previous prime (51615656001061) and next prime (51615656001067).

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (51615656001061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3261851037 + ... + 3261866860.

It is an arithmetic number, because the mean of its divisors is an integer number (3229240359510).

Almost surely, 2^{51615656001064} is an apocalyptic number.

It is an amenable number.

51615656001064 is an abundant number, since it is smaller than the sum of its proper divisors (51720035503256).

51615656001064 is a wasteful number, since it uses less digits than its factorization.

51615656001064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6523717969 (or 6523717965 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 46.

The spelling of 51615656001064 in words is "fifty-one trillion, six hundred fifteen billion, six hundred fifty-six million, one thousand, sixty-four".