50615239621 has 4 divisors (see below), whose sum is σ = 50615865612. Its totient is φ = 50614613632.

The previous prime is 50615239607. The next prime is 50615239627. The reversal of 50615239621 is 12693251605.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35898880900 + 14716358721 = 189470^2 + 121311^2 .

It is a cyclic number.

It is not a de Polignac number, because 50615239621 - 2²¹ = 50613142469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50615239627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169906 + ... + 360691.

It is an arithmetic number, because the mean of its divisors is an integer number (12653966403).

Almost surely, 2^50615239621 is an apocalyptic number.

It is an amenable number.

50615239621 is a deficient number, since it is larger than the sum of its proper divisors (625991).

50615239621 is an equidigital number, since it uses as much as digits as its factorization.

50615239621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625990.

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 50615239621 in words is "fifty billion, six hundred fifteen million, two hundred thirty-nine thousand, six hundred twenty-one".