51256462415 has 16 divisors (see below), whose sum is σ = 63179693760. Its totient is φ = 39890880000.

The previous prime is 51256462399. The next prime is 51256462441. The reversal of 51256462415 is 51426465215.

It is not a de Polignac number, because 51256462415 - 2⁴ = 51256462399 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, 1501790 + ... + 1535540.

It is an arithmetic number, because the mean of its divisors is an integer number (3948730860).

Almost surely, 2^51256462415 is an apocalyptic number.

51256462415 is a deficient number, since it is larger than the sum of its proper divisors (11923231345).

51256462415 is a wasteful number, since it uses less digits than its factorization.

51256462415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42002.

The product of its digits is 288000, while the sum is 41.

The spelling of 51256462415 in words is "fifty-one billion, two hundred fifty-six million, four hundred sixty-two thousand, four hundred fifteen".