51636652407 has 6 divisors (see below), whose sum is σ = 74586275712. Its totient is φ = 34424434932.

The previous prime is 51636652391. The next prime is 51636652411. The reversal of 51636652407 is 70425663615.

51636652407 is a `hidden beast` number, since 5 + 1 + 63 + 66 + 524 + 0 + 7 = 666.

It is not a de Polignac number, because 51636652407 - 2⁴ = 51636652391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51636657407) 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 5 ways as a sum of consecutive naturals, for example, 2868702903 + ... + 2868702920.

It is an arithmetic number, because the mean of its divisors is an integer number (12431045952).

Almost surely, 2^51636652407 is an apocalyptic number.

51636652407 is a deficient number, since it is larger than the sum of its proper divisors (22949623305).

51636652407 is a wasteful number, since it uses less digits than its factorization.

51636652407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5737405829 (or 5737405826 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 51636652407 in words is "fifty-one billion, six hundred thirty-six million, six hundred fifty-two thousand, four hundred seven".