51700056863 has 32 divisors (see below), whose sum is σ = 64992412800. Its totient is φ = 40034082816.

The previous prime is 51700056853. The next prime is 51700056929. The reversal of 51700056863 is 36865000715.

It is not a de Polignac number, because 51700056863 - 2⁸ = 51700056607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51700056863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51700056853) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1959503 + ... + 1985711.

It is an arithmetic number, because the mean of its divisors is an integer number (2031012900).

Almost surely, 2^51700056863 is an apocalyptic number.

51700056863 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

51700056863 is a deficient number, since it is larger than the sum of its proper divisors (13292355937).

51700056863 is a wasteful number, since it uses less digits than its factorization.

51700056863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26691.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 51700056863 in words is "fifty-one billion, seven hundred million, fifty-six thousand, eight hundred sixty-three".