51390422179 has 8 divisors (see below), whose sum is σ = 52013766672. Its totient is φ = 50767177440.

The previous prime is 51390422177. The next prime is 51390422203. The reversal of 51390422179 is 97122409315.

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

It is a cyclic number.

It is not a de Polignac number, because 51390422179 - 2¹ = 51390422177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51390422177) 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, 1984197 + ... + 2009929.

It is an arithmetic number, because the mean of its divisors is an integer number (6501720834).

Almost surely, 2^51390422179 is an apocalyptic number.

51390422179 is a deficient number, since it is larger than the sum of its proper divisors (623344493).

51390422179 is a wasteful number, since it uses less digits than its factorization.

51390422179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49877.

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 51390422179 in words is "fifty-one billion, three hundred ninety million, four hundred twenty-two thousand, one hundred seventy-nine".