51975295191 has 80 divisors (see below), whose sum is σ = 80523970560. Its totient is φ = 33392399040.

The previous prime is 51975295171. The next prime is 51975295231. The reversal of 51975295191 is 19159257915.

51975295191 is a `hidden beast` number, since 51 + 9 + 75 + 2 + 9 + 519 + 1 = 666.

It is not a de Polignac number, because 51975295191 - 2²⁵ = 51941740759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51975295171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 112257426 + ... + 112257888.

It is an arithmetic number, because the mean of its divisors is an integer number (1006549632).

Almost surely, 2^51975295191 is an apocalyptic number.

51975295191 is a deficient number, since it is larger than the sum of its proper divisors (28548675369).

51975295191 is a wasteful number, since it uses less digits than its factorization.

51975295191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938 (or 929 counting only the distinct ones).

The product of its digits is 1275750, while the sum is 54.

The spelling of 51975295191 in words is "fifty-one billion, nine hundred seventy-five million, two hundred ninety-five thousand, one hundred ninety-one".