40367865664 has 28 divisors (see below), whose sum is σ = 91548553504. Its totient is φ = 17300513664.

The previous prime is 40367865631. The next prime is 40367865683. The reversal of 40367865664 is 46656876304.

It is a tau number, because it is divible by the number of its divisors (28).

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 3 ways as a sum of consecutive naturals, for example, 45052974 + ... + 45053869.

Almost surely, 2^40367865664 is an apocalyptic number.

It is an amenable number.

40367865664 is an abundant number, since it is smaller than the sum of its proper divisors (51180687840).

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

40367865664 is an equidigital number, since it uses as much as digits as its factorization.

40367865664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90106862 (or 90106852 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 55.

The spelling of 40367865664 in words is "forty billion, three hundred sixty-seven million, eight hundred sixty-five thousand, six hundred sixty-four".