51190861799 has 48 divisors (see below), whose sum is σ = 66365684736. Its totient is φ = 38358230400.

The previous prime is 51190861769. The next prime is 51190861817. The reversal of 51190861799 is 99716809115.

It is a de Polignac number, because none of the positive numbers 2^k-51190861799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51190861769) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17547689 + ... + 17550605.

It is an arithmetic number, because the mean of its divisors is an integer number (1382618432).

Almost surely, 2^51190861799 is an apocalyptic number.

51190861799 is a deficient number, since it is larger than the sum of its proper divisors (15174822937).

51190861799 is a wasteful number, since it uses less digits than its factorization.

51190861799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3264 (or 3235 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 56.

The spelling of 51190861799 in words is "fifty-one billion, one hundred ninety million, eight hundred sixty-one thousand, seven hundred ninety-nine".