51655695822 has 24 divisors (see below), whose sum is σ = 111926430720. Its totient is φ = 17217679680.

The previous prime is 51655695811. The next prime is 51655695841. The reversal of 51655695822 is 22859655615.

It is a happy number.

51655695822 is a `hidden beast` number, since 5 + 1 + 6 + 5 + 56 + 9 + 582 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 352422 + ... + 476982.

It is an arithmetic number, because the mean of its divisors is an integer number (4663601280).

Almost surely, 2^51655695822 is an apocalyptic number.

51655695822 is an abundant number, since it is smaller than the sum of its proper divisors (60270734898).

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

51655695822 is a wasteful number, since it uses less digits than its factorization.

51655695822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147608 (or 147605 counting only the distinct ones).

The product of its digits is 6480000, while the sum is 54.

The spelling of 51655695822 in words is "fifty-one billion, six hundred fifty-five million, six hundred ninety-five thousand, eight hundred twenty-two".