50633511561 has 20 divisors (see below), whose sum is σ = 76331652100. Its totient is φ = 33445983456.

The previous prime is 50633511547. The next prime is 50633511571. The reversal of 50633511561 is 16511533605.

50633511561 is a `hidden beast` number, since 5 + 0 + 63 + 35 + 1 + 1 + 561 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 24287352336 + 26346159225 = 155844^2 + 162315^2 .

It is not a de Polignac number, because 50633511561 - 2¹⁰ = 50633510537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50633511571) 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 19 ways as a sum of consecutive naturals, for example, 2858626 + ... + 2876283.

It is an arithmetic number, because the mean of its divisors is an integer number (3816582605).

Almost surely, 2^50633511561 is an apocalyptic number.

It is an amenable number.

50633511561 is a deficient number, since it is larger than the sum of its proper divisors (25698140539).

50633511561 is a wasteful number, since it uses less digits than its factorization.

50633511561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5735030 (or 5735021 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 36.

The spelling of 50633511561 in words is "fifty billion, six hundred thirty-three million, five hundred eleven thousand, five hundred sixty-one".