51372320361306 has 16 divisors (see below), whose sum is σ = 117422446540224. Its totient is φ = 14677805817504.

The previous prime is 51372320361251. The next prime is 51372320361331. The reversal of 51372320361306 is 60316302327315.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1223150484793 = 51372320361306 / (5 + 1 + 3 + 7 + 2 + 3 + 2 + 0 + 3 + 6 + 1 + 3 + 0 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 611575242355 + ... + 611575242438.

It is an arithmetic number, because the mean of its divisors is an integer number (7338902908764).

Almost surely, 2^{51372320361306} is an apocalyptic number.

51372320361306 is an abundant number, since it is smaller than the sum of its proper divisors (66050126178918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51372320361306 is a wasteful number, since it uses less digits than its factorization.

51372320361306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223150484805.

The product of its (nonzero) digits is 408240, while the sum is 42.

The spelling of 51372320361306 in words is "fifty-one trillion, three hundred seventy-two billion, three hundred twenty million, three hundred sixty-one thousand, three hundred six".