51539176401 has 4 divisors (see below), whose sum is σ = 68718901872. Its totient is φ = 34359450932.

The previous prime is 51539176379. The next prime is 51539176433. The reversal of 51539176401 is 10467193515.

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 51539176401 - 2¹⁷ = 51539045329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51539172401) 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, 8589862731 + ... + 8589862736.

It is an arithmetic number, because the mean of its divisors is an integer number (17179725468).

Almost surely, 2^51539176401 is an apocalyptic number.

It is an amenable number.

51539176401 is a deficient number, since it is larger than the sum of its proper divisors (17179725471).

51539176401 is a wasteful number, since it uses less digits than its factorization.

51539176401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17179725470.

The product of its (nonzero) digits is 113400, while the sum is 42.

The spelling of 51539176401 in words is "fifty-one billion, five hundred thirty-nine million, one hundred seventy-six thousand, four hundred one".