51876067815 has 64 divisors (see below), whose sum is σ = 108347258880. Its totient is φ = 23217252480.

The previous prime is 51876067657. The next prime is 51876067829.

51876067815 is a `hidden beast` number, since 5 + 18 + 7 + 606 + 7 + 8 + 15 = 666.

51876067815 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51876067815 - 2¹² = 51876063719 is a prime.

It is a super-2 number, since 2×51876067815² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1324287 + ... + 1362896.

It is an arithmetic number, because the mean of its divisors is an integer number (1692925920).

Almost surely, 2^51876067815 is an apocalyptic number.

51876067815 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51876067815 is an abundant number, since it is smaller than the sum of its proper divisors (56471191065).

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

51876067815 is a wasteful number, since it uses less digits than its factorization.

51876067815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2687221 (or 2687215 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 54.

The spelling of 51876067815 in words is "fifty-one billion, eight hundred seventy-six million, sixty-seven thousand, eight hundred fifteen".