51881149776 has 20 divisors (see below), whose sum is σ = 134026303712. Its totient is φ = 17293716576.

The previous prime is 51881149699. The next prime is 51881149783. The reversal of 51881149776 is 67794118815.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 540428596 + ... + 540428691.

Almost surely, 2^51881149776 is an apocalyptic number.

It is an amenable number.

51881149776 is an abundant number, since it is smaller than the sum of its proper divisors (82145153936).

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

51881149776 is a wasteful number, since it uses less digits than its factorization.

51881149776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080857298 (or 1080857292 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 57.

The spelling of 51881149776 in words is "fifty-one billion, eight hundred eighty-one million, one hundred forty-nine thousand, seven hundred seventy-six".