51283512638613 has 12 divisors (see below), whose sum is σ = 75652273963968. Its totient is φ = 33461582714280.

The previous prime is 51283512638609. The next prime is 51283512638623. The reversal of 51283512638613 is 31683621538215.

51283512638613 is a `hidden beast` number, since 5 + 1 + 2 + 8 + 3 + 5 + 12 + 6 + 3 + 8 + 613 = 666.

It is not a de Polignac number, because 51283512638613 - 2² = 51283512638609 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 51283512638613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51283512638623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60618808843 + ... + 60618809688.

It is an arithmetic number, because the mean of its divisors is an integer number (6304356163664).

Almost surely, 2^{51283512638613} is an apocalyptic number.

It is an amenable number.

51283512638613 is a deficient number, since it is larger than the sum of its proper divisors (24368761325355).

51283512638613 is a wasteful number, since it uses less digits than its factorization.

51283512638613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121237618584 (or 121237618581 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 54.

The spelling of 51283512638613 in words is "fifty-one trillion, two hundred eighty-three billion, five hundred twelve million, six hundred thirty-eight thousand, six hundred thirteen".