51538264655858 has 16 divisors (see below), whose sum is σ = 79801435768320. Its totient is φ = 24937791312000.

The previous prime is 51538264655789. The next prime is 51538264655887. The reversal of 51538264655858 is 85855646283515.

It is a junction number, because it is equal to n+sod(n) for n = 51538264655791 and 51538264655800.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21738683 + ... + 23992641.

It is an arithmetic number, because the mean of its divisors is an integer number (4987589735520).

Almost surely, 2^{51538264655858} is an apocalyptic number.

51538264655858 is a deficient number, since it is larger than the sum of its proper divisors (28263171112462).

51538264655858 is a wasteful number, since it uses less digits than its factorization.

51538264655858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2622793.

The product of its digits is 1382400000, while the sum is 71.

The spelling of 51538264655858 in words is "fifty-one trillion, five hundred thirty-eight billion, two hundred sixty-four million, six hundred fifty-five thousand, eight hundred fifty-eight".