51231510113 has 8 divisors (see below), whose sum is σ = 60569273280. Its totient is φ = 42398490960.

The previous prime is 51231510101. The next prime is 51231510163. The reversal of 51231510113 is 31101513215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51231510113 - 2⁶ = 51231510049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51231510163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126185783 + ... + 126186188.

It is an arithmetic number, because the mean of its divisors is an integer number (7571159160).

Almost surely, 2^51231510113 is an apocalyptic number.

It is an amenable number.

51231510113 is a deficient number, since it is larger than the sum of its proper divisors (9337763167).

51231510113 is a wasteful number, since it uses less digits than its factorization.

51231510113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252372007.

The product of its (nonzero) digits is 450, while the sum is 23.

The spelling of 51231510113 in words is "fifty-one billion, two hundred thirty-one million, five hundred ten thousand, one hundred thirteen".