50913860881 has 27 divisors (see below), whose sum is σ = 58622794803. Its totient is φ = 44189533440.

The previous prime is 50913860861. The next prime is 50913860903. The reversal of 50913860881 is 18806831905.

The square root of 50913860881 is 225641.

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

It can be written as a sum of positive squares in 13 ways, for example, as 26101310481 + 24812550400 = 161559^2 + 157520^2 .

It is not a de Polignac number, because 50913860881 - 2⁵ = 50913860849 is a prime.

It is a super-2 number, since 2×50913860881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50913860831) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 49866151 + ... + 49867171.

Almost surely, 2^50913860881 is an apocalyptic number.

50913860881 is the 225641-st square number.

50913860881 is the 112821-st centered octagonal number.

It is an amenable number.

50913860881 is a deficient number, since it is larger than the sum of its proper divisors (7708933922).

50913860881 is an equidigital number, since it uses as much as digits as its factorization.

50913860881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102 (or 1051 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 49.

Multiplying 50913860881 by its sum of digits (49), we get a square (2494779183169 = 1579487²).

The spelling of 50913860881 in words is "fifty billion, nine hundred thirteen million, eight hundred sixty thousand, eight hundred eighty-one".