51215662256005 has 16 divisors (see below), whose sum is σ = 66186584593920. Its totient is φ = 37820688003648.

The previous prime is 51215662255993. The next prime is 51215662256029. The reversal of 51215662256005 is 50065226651215.

51215662256005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51215662256005 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26972236 + ... + 28808554.

It is an arithmetic number, because the mean of its divisors is an integer number (4136661537120).

Almost surely, 2^{51215662256005} is an apocalyptic number.

It is an amenable number.

51215662256005 is a deficient number, since it is larger than the sum of its proper divisors (14970922337915).

51215662256005 is a wasteful number, since it uses less digits than its factorization.

51215662256005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265420.

The product of its (nonzero) digits is 1080000, while the sum is 46.

The spelling of 51215662256005 in words is "fifty-one trillion, two hundred fifteen billion, six hundred sixty-two million, two hundred fifty-six thousand, five".