51455524640064 has 56 divisors (see below), whose sum is σ = 136712377303680. Its totient is φ = 17080076504064.

The previous prime is 51455524640041. The next prime is 51455524640119. The reversal of 51455524640064 is 46004642555415.

It is a junction number, because it is equal to n+sod(n) for n = 51455524639989 and 51455524640016.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 560618389 + ... + 560710164.

Almost surely, 2^{51455524640064} is an apocalyptic number.

It is an amenable number.

51455524640064 is an abundant number, since it is smaller than the sum of its proper divisors (85256852663616).

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

51455524640064 is a wasteful number, since it uses less digits than its factorization.

51455524640064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121328807 (or 1121328797 counting only the distinct ones).

The product of its (nonzero) digits is 11520000, while the sum is 51.

The spelling of 51455524640064 in words is "fifty-one trillion, four hundred fifty-five billion, five hundred twenty-four million, six hundred forty thousand, sixty-four".