49564991831 has 2 divisors, whose sum is σ = 49564991832. Its totient is φ = 49564991830.

The previous prime is 49564991783. The next prime is 49564991851. The reversal of 49564991831 is 13819946594.

49564991831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49564991831 - 2¹⁰ = 49564990807 is a prime.

It is a super-2 number, since 2×49564991831² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49564991851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24782495915 + 24782495916.

It is an arithmetic number, because the mean of its divisors is an integer number (24782495916).

Almost surely, 2^49564991831 is an apocalyptic number.

49564991831 is a deficient number, since it is larger than the sum of its proper divisors (1).

49564991831 is an equidigital number, since it uses as much as digits as its factorization.

49564991831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8398080, while the sum is 59.

The spelling of 49564991831 in words is "forty-nine billion, five hundred sixty-four million, nine hundred ninety-one thousand, eight hundred thirty-one".