40407036668 has 24 divisors (see below), whose sum is σ = 73160161200. Its totient is φ = 19504314368.

The previous prime is 40407036623. The next prime is 40407036671. The reversal of 40407036668 is 86663070404.

It is a happy number.

It is a super-2 number, since 2×40407036668² (a number of 22 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 1125743 + ... + 1161081.

It is an arithmetic number, because the mean of its divisors is an integer number (3048340050).

Almost surely, 2^40407036668 is an apocalyptic number.

It is an amenable number.

40407036668 is a deficient number, since it is larger than the sum of its proper divisors (32753124532).

40407036668 is a wasteful number, since it uses less digits than its factorization.

40407036668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45229 (or 45227 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 44.

The spelling of 40407036668 in words is "forty billion, four hundred seven million, thirty-six thousand, six hundred sixty-eight".