40249312668 has 48 divisors (see below), whose sum is σ = 108887036160. Its totient is φ = 12833113392.

The previous prime is 40249312651. The next prime is 40249312721. The reversal of 40249312668 is 86621394204.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8099230 + ... + 8104197.

It is an arithmetic number, because the mean of its divisors is an integer number (2268479920).

Almost surely, 2^40249312668 is an apocalyptic number.

It is an amenable number.

40249312668 is an abundant number, since it is smaller than the sum of its proper divisors (68637723492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40249312668 is a wasteful number, since it uses less digits than its factorization.

40249312668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16203463 (or 16203455 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 40249312668 in words is "forty billion, two hundred forty-nine million, three hundred twelve thousand, six hundred sixty-eight".