40664680818 has 16 divisors (see below), whose sum is σ = 81341851296. Its totient is φ = 13552812000.

The previous prime is 40664680757. The next prime is 40664680909. The reversal of 40664680818 is 81808646604.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477808 + ... + 556443.

It is an arithmetic number, because the mean of its divisors is an integer number (5083865706).

Almost surely, 2^40664680818 is an apocalyptic number.

40664680818 is an abundant number, since it is smaller than the sum of its proper divisors (40677170478).

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

40664680818 is a wasteful number, since it uses less digits than its factorization.

40664680818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040809.

The product of its (nonzero) digits is 1769472, while the sum is 51.

The spelling of 40664680818 in words is "forty billion, six hundred sixty-four million, six hundred eighty thousand, eight hundred eighteen".