50993531905 has 12 divisors (see below), whose sum is σ = 62890789500. Its totient is φ = 39692257344.

The previous prime is 50993531903. The next prime is 50993531929. The reversal of 50993531905 is 50913539905.

It can be written as a sum of positive squares in 6 ways, for example, as 11137003024 + 39856528881 = 105532^2 + 199641^2 .

It is not a de Polignac number, because 50993531905 - 2¹ = 50993531903 is a prime.

It is a super-2 number, since 2×50993531905² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50993531903) 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 11 ways as a sum of consecutive naturals, for example, 3718030 + ... + 3731719.

It is an arithmetic number, because the mean of its divisors is an integer number (5240899125).

Almost surely, 2^50993531905 is an apocalyptic number.

It is an amenable number.

50993531905 is a deficient number, since it is larger than the sum of its proper divisors (11897257595).

50993531905 is an equidigital number, since it uses as much as digits as its factorization.

50993531905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7449828 (or 7449791 counting only the distinct ones).

The product of its (nonzero) digits is 820125, while the sum is 49.

The spelling of 50993531905 in words is "fifty billion, nine hundred ninety-three million, five hundred thirty-one thousand, nine hundred five".