51150661507 has 8 divisors (see below), whose sum is σ = 57308849712. Its totient is φ = 45243828000.

The previous prime is 51150661459. The next prime is 51150661511. The reversal of 51150661507 is 70516605115.

51150661507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51150661507 is a prime.

It is a super-2 number, since 2×51150661507² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51150661307) 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, 62838244 + ... + 62839057.

It is an arithmetic number, because the mean of its divisors is an integer number (7163606214).

Almost surely, 2^51150661507 is an apocalyptic number.

51150661507 is a deficient number, since it is larger than the sum of its proper divisors (6158188205).

51150661507 is a wasteful number, since it uses less digits than its factorization.

51150661507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125677349.

The product of its (nonzero) digits is 31500, while the sum is 37.

The spelling of 51150661507 in words is "fifty-one billion, one hundred fifty million, six hundred sixty-one thousand, five hundred seven".