49561205013 has 12 divisors (see below), whose sum is σ = 72068868300. Its totient is φ = 32819052096.

The previous prime is 49561205003. The next prime is 49561205053. The reversal of 49561205013 is 31050216594.

49561205013 is a `hidden beast` number, since 4 + 95 + 61 + 2 + 0 + 501 + 3 = 666.

49561205013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12366996849 + 37194208164 = 111207^2 + 192858^2 .

It is not a de Polignac number, because 49561205013 - 2²⁵ = 49527650581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49561205003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18477856 + ... + 18480537.

It is an arithmetic number, because the mean of its divisors is an integer number (6005739025).

Almost surely, 2^49561205013 is an apocalyptic number.

It is an amenable number.

49561205013 is a deficient number, since it is larger than the sum of its proper divisors (22507663287).

49561205013 is a wasteful number, since it uses less digits than its factorization.

49561205013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36958548 (or 36958545 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 49561205013 in words is "forty-nine billion, five hundred sixty-one million, two hundred five thousand, thirteen".