51636775575 has 96 divisors (see below), whose sum is σ = 106516611072. Its totient is φ = 21443760000.

The previous prime is 51636775549. The next prime is 51636775637. The reversal of 51636775575 is 57557763615.

It is a happy number.

It is not a de Polignac number, because 51636775575 - 2⁹ = 51636775063 is a prime.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 11264734 + ... + 11269316.

It is an arithmetic number, because the mean of its divisors is an integer number (1109548032).

Almost surely, 2^51636775575 is an apocalyptic number.

51636775575 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51636775575 is an abundant number, since it is smaller than the sum of its proper divisors (54879835497).

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

51636775575 is a wasteful number, since it uses less digits than its factorization.

51636775575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6565 (or 6560 counting only the distinct ones).

The product of its digits is 23152500, while the sum is 57.

The spelling of 51636775575 in words is "fifty-one billion, six hundred thirty-six million, seven hundred seventy-five thousand, five hundred seventy-five".