51576266780 has 48 divisors (see below), whose sum is σ = 108962884800. Its totient is φ = 20506387968.

The previous prime is 51576266773. The next prime is 51576266801. The reversal of 51576266780 is 8766267515.

It is a super-2 number, since 2×51576266780² (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 (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4360154 + ... + 4371966.

It is an arithmetic number, because the mean of its divisors is an integer number (2270060100).

Almost surely, 2^51576266780 is an apocalyptic number.

It is an amenable number.

51576266780 is an abundant number, since it is smaller than the sum of its proper divisors (57386618020).

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

51576266780 is a wasteful number, since it uses less digits than its factorization.

51576266780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13118 (or 13116 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 53.

The spelling of 51576266780 in words is "fifty-one billion, five hundred seventy-six million, two hundred sixty-six thousand, seven hundred eighty".