51905404776 has 64 divisors (see below), whose sum is σ = 138568435200. Its totient is φ = 16166304000.

The previous prime is 51905404763. The next prime is 51905404777. The reversal of 51905404776 is 67740450915.

It is a super-2 number, since 2×51905404776² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51905404777) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1181275 + ... + 1224426.

It is an arithmetic number, because the mean of its divisors is an integer number (2165131800).

Almost surely, 2^51905404776 is an apocalyptic number.

It is an amenable number.

51905404776 is an abundant number, since it is smaller than the sum of its proper divisors (86663030424).

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

51905404776 is a wasteful number, since it uses less digits than its factorization.

51905404776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405770 (or 2405766 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 48.

The spelling of 51905404776 in words is "fifty-one billion, nine hundred five million, four hundred four thousand, seven hundred seventy-six".