51438873233862 has 80 divisors (see below), whose sum is σ = 116844577309152. Its totient is φ = 16910762221440.

The previous prime is 51438873233851. The next prime is 51438873233897. The reversal of 51438873233862 is 26833237883415.

51438873233862 is a `hidden beast` number, since 5 + 1 + 438 + 87 + 32 + 3 + 38 + 62 = 666.

It is a super-3 number, since 3×51438873233862³ (a number of 42 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51438873233862.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 382870543 + ... + 383004869.

Almost surely, 2^{51438873233862} is an apocalyptic number.

51438873233862 is an abundant number, since it is smaller than the sum of its proper divisors (65405704075290).

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

51438873233862 is a wasteful number, since it uses less digits than its factorization.

51438873233862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166795 (or 166786 counting only the distinct ones).

The product of its digits is 139345920, while the sum is 63.

The spelling of 51438873233862 in words is "fifty-one trillion, four hundred thirty-eight billion, eight hundred seventy-three million, two hundred thirty-three thousand, eight hundred sixty-two".