51120110613 has 48 divisors (see below), whose sum is σ = 80732268288. Its totient is φ = 28581168000.

The previous prime is 51120110549. The next prime is 51120110633. The reversal of 51120110613 is 31601102115.

It is a happy number.

It is not a de Polignac number, because 51120110613 - 2⁶ = 51120110549 is a prime.

It is a super-2 number, since 2×51120110613² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51120110613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51120110633) 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, 13810663 + ... + 13814363.

It is an arithmetic number, because the mean of its divisors is an integer number (1681922256).

Almost surely, 2^51120110613 is an apocalyptic number.

It is an amenable number.

51120110613 is a deficient number, since it is larger than the sum of its proper divisors (29612157675).

51120110613 is a wasteful number, since it uses less digits than its factorization.

51120110613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6666 (or 6655 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 21.

Adding to 51120110613 its reverse (31601102115), we get a palindrome (82721212728).

The spelling of 51120110613 in words is "fifty-one billion, one hundred twenty million, one hundred ten thousand, six hundred thirteen".