40208868631 has 2 divisors, whose sum is σ = 40208868632. Its totient is φ = 40208868630.

The previous prime is 40208868611. The next prime is 40208868701. The reversal of 40208868631 is 13686880204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40208868631 - 2¹⁷ = 40208737559 is a prime.

It is a super-2 number, since 2×40208868631² (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 (40208868611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20104434315 + 20104434316.

It is an arithmetic number, because the mean of its divisors is an integer number (20104434316).

Almost surely, 2^40208868631 is an apocalyptic number.

40208868631 is a deficient number, since it is larger than the sum of its proper divisors (1).

40208868631 is an equidigital number, since it uses as much as digits as its factorization.

40208868631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 40208868631 in words is "forty billion, two hundred eight million, eight hundred sixty-eight thousand, six hundred thirty-one".