40938760639 has 6 divisors (see below), whose sum is σ = 47622639984. Its totient is φ = 35090366220.

The previous prime is 40938760627. The next prime is 40938760661. The reversal of 40938760639 is 93606783904.

It is not a de Polignac number, because 40938760639 - 2⁵ = 40938760607 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40938760639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40938760619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 417742407 + ... + 417742504.

It is an arithmetic number, because the mean of its divisors is an integer number (7937106664).

Almost surely, 2^40938760639 is an apocalyptic number.

40938760639 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

40938760639 is a deficient number, since it is larger than the sum of its proper divisors (6683879345).

40938760639 is an equidigital number, since it uses as much as digits as its factorization.

40938760639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835484925 (or 835484918 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 55.

The spelling of 40938760639 in words is "forty billion, nine hundred thirty-eight million, seven hundred sixty thousand, six hundred thirty-nine".