51372038746073 has 4 divisors (see below), whose sum is σ = 51372195378960. Its totient is φ = 51371882113188.

The previous prime is 51372038746033. The next prime is 51372038746163. The reversal of 51372038746073 is 37064783027315.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51372038746073 - 2⁶ = 51372038746009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51372038746033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77823443 + ... + 78480776.

It is an arithmetic number, because the mean of its divisors is an integer number (12843048844740).

Almost surely, 2^{51372038746073} is an apocalyptic number.

It is an amenable number.

51372038746073 is a deficient number, since it is larger than the sum of its proper divisors (156632887).

51372038746073 is a wasteful number, since it uses less digits than its factorization.

51372038746073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156632886.

The product of its (nonzero) digits is 17781120, while the sum is 56.

The spelling of 51372038746073 in words is "fifty-one trillion, three hundred seventy-two billion, thirty-eight million, seven hundred forty-six thousand, seventy-three".