50516556161 has 8 divisors (see below), whose sum is σ = 53455365504. Its totient is φ = 47639616640.

The previous prime is 50516556151. The next prime is 50516556169. The reversal of 50516556161 is 16165561505.

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

It is a de Polignac number, because none of the positive numbers 2^k-50516556161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50516556169) 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, 15465776 + ... + 15469041.

It is an arithmetic number, because the mean of its divisors is an integer number (6681920688).

Almost surely, 2^50516556161 is an apocalyptic number.

It is an amenable number.

50516556161 is a deficient number, since it is larger than the sum of its proper divisors (2938809343).

50516556161 is a wasteful number, since it uses less digits than its factorization.

50516556161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30934911.

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 50516556161 in words is "fifty billion, five hundred sixteen million, five hundred fifty-six thousand, one hundred sixty-one".