50115085021 has 4 divisors (see below), whose sum is σ = 50118133500. Its totient is φ = 50112036544.

The previous prime is 50115084989. The next prime is 50115085103. The reversal of 50115085021 is 12058051105.

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 40896972900 + 9218112121 = 202230^2 + 96011^2 .

It is a cyclic number.

It is not a de Polignac number, because 50115085021 - 2⁵ = 50115084989 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 (50115082021) 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, 1499446 + ... + 1532503.

It is an arithmetic number, because the mean of its divisors is an integer number (12529533375).

Almost surely, 2^50115085021 is an apocalyptic number.

It is an amenable number.

50115085021 is a deficient number, since it is larger than the sum of its proper divisors (3048479).

50115085021 is a wasteful number, since it uses less digits than its factorization.

50115085021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3048478.

The product of its (nonzero) digits is 2000, while the sum is 28.

The spelling of 50115085021 in words is "fifty billion, one hundred fifteen million, eighty-five thousand, twenty-one".