51607718923 has 4 divisors (see below), whose sum is σ = 51949492048. Its totient is φ = 51265945800.

The previous prime is 51607718879. The next prime is 51607718947. The reversal of 51607718923 is 32981770615.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51607718923 - 2³³ = 43017784331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51607718963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170886336 + ... + 170886637.

It is an arithmetic number, because the mean of its divisors is an integer number (12987373012).

Almost surely, 2^51607718923 is an apocalyptic number.

51607718923 is a deficient number, since it is larger than the sum of its proper divisors (341773125).

51607718923 is a wasteful number, since it uses less digits than its factorization.

51607718923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341773124.

The product of its (nonzero) digits is 635040, while the sum is 49.

The spelling of 51607718923 in words is "fifty-one billion, six hundred seven million, seven hundred eighteen thousand, nine hundred twenty-three".