51113798559 has 24 divisors (see below), whose sum is σ = 74522711952. Its totient is φ = 33758040960.

The previous prime is 51113798551. The next prime is 51113798573. The reversal of 51113798559 is 95589731115.

It is a happy number.

51113798559 is a `hidden beast` number, since 5 + 1 + 1 + 13 + 79 + 8 + 559 = 666.

It is not a de Polignac number, because 51113798559 - 2³ = 51113798551 is a prime.

It is a super-2 number, since 2×51113798559² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51113798551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 379104 + ... + 495930.

It is an arithmetic number, because the mean of its divisors is an integer number (3105112998).

Almost surely, 2^51113798559 is an apocalyptic number.

51113798559 is a deficient number, since it is larger than the sum of its proper divisors (23408913393).

51113798559 is a wasteful number, since it uses less digits than its factorization.

51113798559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117287 (or 117284 counting only the distinct ones).

The product of its digits is 1701000, while the sum is 54.

The spelling of 51113798559 in words is "fifty-one billion, one hundred thirteen million, seven hundred ninety-eight thousand, five hundred fifty-nine".