51936863851 has 16 divisors (see below), whose sum is σ = 53631920160. Its totient is φ = 50257912320.

The previous prime is 51936863843. The next prime is 51936863887. The reversal of 51936863851 is 15836863915.

It is a cyclic number.

It is not a de Polignac number, because 51936863851 - 2³ = 51936863843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51936863792 and 51936863801.

It is not an unprimeable number, because it can be changed into a prime (51936863351) 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, 5219541 + ... + 5229481.

It is an arithmetic number, because the mean of its divisors is an integer number (3351995010).

Almost surely, 2^51936863851 is an apocalyptic number.

51936863851 is a deficient number, since it is larger than the sum of its proper divisors (1695056309).

51936863851 is a wasteful number, since it uses less digits than its factorization.

51936863851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10734.

The product of its digits is 4665600, while the sum is 55.

The spelling of 51936863851 in words is "fifty-one billion, nine hundred thirty-six million, eight hundred sixty-three thousand, eight hundred fifty-one".