50994220761 has 45 divisors (see below), whose sum is σ = 83767975599. Its totient is φ = 30892039200.

The previous prime is 50994220747. The next prime is 50994220763. The reversal of 50994220761 is 16702249905.

The square root of 50994220761 is 225819.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 30670867161 + 20323353600 = 175131^2 + 142560^2 .

It is not a de Polignac number, because 50994220761 - 2¹⁹ = 50993696473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50994220763) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 22354941 + ... + 22357221.

Almost surely, 2^50994220761 is an apocalyptic number.

50994220761 is the 225819-th square number.

50994220761 is the 112910-th centered octagonal number.

It is an amenable number.

50994220761 is a deficient number, since it is larger than the sum of its proper divisors (32773754838).

50994220761 is an frugal number, since it uses more digits than its factorization.

50994220761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4596 (or 2295 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 50994220761 in words is "fifty billion, nine hundred ninety-four million, two hundred twenty thousand, seven hundred sixty-one".