51037318873 has 4 divisors (see below), whose sum is σ = 51057486288. Its totient is φ = 51017151460.

The previous prime is 51037318853. The next prime is 51037318883. The reversal of 51037318873 is 37881373015.

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 51037318873 - 2⁵ = 51037318841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51037318853) 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, 10079911 + ... + 10084972.

It is an arithmetic number, because the mean of its divisors is an integer number (12764371572).

Almost surely, 2^51037318873 is an apocalyptic number.

It is an amenable number.

51037318873 is a deficient number, since it is larger than the sum of its proper divisors (20167415).

51037318873 is a wasteful number, since it uses less digits than its factorization.

51037318873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20167414.

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 51037318873 in words is "fifty-one billion, thirty-seven million, three hundred eighteen thousand, eight hundred seventy-three".