51899376428 has 12 divisors (see below), whose sum is σ = 91973579040. Its totient is φ = 25621210992.

The previous prime is 51899376391. The next prime is 51899376437. The reversal of 51899376428 is 82467399815.

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, 82118951 + ... + 82119582.

It is an arithmetic number, because the mean of its divisors is an integer number (7664464920).

Almost surely, 2^51899376428 is an apocalyptic number.

It is an amenable number.

51899376428 is a deficient number, since it is larger than the sum of its proper divisors (40074202612).

51899376428 is a wasteful number, since it uses less digits than its factorization.

51899376428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164238616 (or 164238614 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 62.

The spelling of 51899376428 in words is "fifty-one billion, eight hundred ninety-nine million, three hundred seventy-six thousand, four hundred twenty-eight".