40026505631 has 16 divisors (see below), whose sum is σ = 47228989440. Its totient is φ = 33195536640.

The previous prime is 40026505621. The next prime is 40026505633. The reversal of 40026505631 is 13650562004.

It is a de Polignac number, because none of the positive numbers 2^k-40026505631 is a prime.

It is a super-2 number, since 2×40026505631² (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 (40026505633) 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, 1435535 + ... + 1463151.

It is an arithmetic number, because the mean of its divisors is an integer number (2951811840).

Almost surely, 2^40026505631 is an apocalyptic number.

40026505631 is a deficient number, since it is larger than the sum of its proper divisors (7202483809).

40026505631 is a wasteful number, since it uses less digits than its factorization.

40026505631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34334.

The product of its (nonzero) digits is 21600, while the sum is 32.

The spelling of 40026505631 in words is "forty billion, twenty-six million, five hundred five thousand, six hundred thirty-one".