40008747385492 has 24 divisors (see below), whose sum is σ = 70216847254400. Its totient is φ = 19946845640736.

The previous prime is 40008747385489. The next prime is 40008747385549. The reversal of 40008747385492 is 29458374780004.

It is a super-2 number, since 2×40008747385492² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40008747385492.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 3894888 + ... + 9756415.

Almost surely, 2^{40008747385492} is an apocalyptic number.

It is an amenable number.

40008747385492 is a deficient number, since it is larger than the sum of its proper divisors (30208099868908).

40008747385492 is a wasteful number, since it uses less digits than its factorization.

40008747385492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13653415 (or 13653413 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 61.

The spelling of 40008747385492 in words is "forty trillion, eight billion, seven hundred forty-seven million, three hundred eighty-five thousand, four hundred ninety-two".