51381851084 has 12 divisors (see below), whose sum is σ = 90045068400. Its totient is φ = 25654688688.

The previous prime is 51381851021. The next prime is 51381851173. The reversal of 51381851084 is 48015818315.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9056024 + ... + 9061695.

It is an arithmetic number, because the mean of its divisors is an integer number (7503755700).

Almost surely, 2^51381851084 is an apocalyptic number.

It is an amenable number.

51381851084 is a deficient number, since it is larger than the sum of its proper divisors (38663217316).

51381851084 is a wasteful number, since it uses less digits than its factorization.

51381851084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18118432 (or 18118430 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 44.

The spelling of 51381851084 in words is "fifty-one billion, three hundred eighty-one million, eight hundred fifty-one thousand, eighty-four".