40436574631 has 2 divisors, whose sum is σ = 40436574632. Its totient is φ = 40436574630.

The previous prime is 40436574601. The next prime is 40436574677. The reversal of 40436574631 is 13647563404.

40436574631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40436574631 - 2⁵ = 40436574599 is a prime.

It is a super-2 number, since 2×40436574631² (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 (40436574601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20218287315 + 20218287316.

It is an arithmetic number, because the mean of its divisors is an integer number (20218287316).

Almost surely, 2^40436574631 is an apocalyptic number.

40436574631 is a deficient number, since it is larger than the sum of its proper divisors (1).

40436574631 is an equidigital number, since it uses as much as digits as its factorization.

40436574631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 43.

The spelling of 40436574631 in words is "forty billion, four hundred thirty-six million, five hundred seventy-four thousand, six hundred thirty-one".