51403565536536 has 32 divisors (see below), whose sum is σ = 136068261715440. Its totient is φ = 16126608795648.

The previous prime is 51403565536507. The next prime is 51403565536573. The reversal of 51403565536536 is 63563556530415.

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, 62994565201 + ... + 62994566016.

Almost surely, 2^{51403565536536} is an apocalyptic number.

It is an amenable number.

51403565536536 is an abundant number, since it is smaller than the sum of its proper divisors (84664696178904).

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

51403565536536 is a wasteful number, since it uses less digits than its factorization.

51403565536536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125989131243 (or 125989131239 counting only the distinct ones).

The product of its (nonzero) digits is 72900000, while the sum is 57.

The spelling of 51403565536536 in words is "fifty-one trillion, four hundred three billion, five hundred sixty-five million, five hundred thirty-six thousand, five hundred thirty-six".