51871405023 has 16 divisors (see below), whose sum is σ = 81366910560. Its totient is φ = 32546763648.

The previous prime is 51871405007. The next prime is 51871405043. The reversal of 51871405023 is 32050417815.

51871405023 is a `hidden beast` number, since 5 + 1 + 8 + 7 + 140 + 502 + 3 = 666.

It is not a de Polignac number, because 51871405023 - 2⁴ = 51871405007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51871405043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56504340 + ... + 56505257.

It is an arithmetic number, because the mean of its divisors is an integer number (5085431910).

Almost surely, 2^51871405023 is an apocalyptic number.

51871405023 is a deficient number, since it is larger than the sum of its proper divisors (29495505537).

51871405023 is a wasteful number, since it uses less digits than its factorization.

51871405023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113009623 (or 113009617 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The spelling of 51871405023 in words is "fifty-one billion, eight hundred seventy-one million, four hundred five thousand, twenty-three".