40625578631 has 16 divisors (see below), whose sum is σ = 46737744000. Its totient is φ = 34923765600.

The previous prime is 40625578601. The next prime is 40625578633. The reversal of 40625578631 is 13687552604.

40625578631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 40625578631 - 2¹⁴ = 40625562247 is a prime.

It is a super-2 number, since 2×40625578631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40625578633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66581 + ... + 292718.

It is an arithmetic number, because the mean of its divisors is an integer number (2921109000).

Almost surely, 2^40625578631 is an apocalyptic number.

40625578631 is a deficient number, since it is larger than the sum of its proper divisors (6112165369).

40625578631 is a wasteful number, since it uses less digits than its factorization.

40625578631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359870.

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 40625578631 in words is "forty billion, six hundred twenty-five million, five hundred seventy-eight thousand, six hundred thirty-one".