40066664664 has 48 divisors (see below), whose sum is σ = 108464502600. Its totient is φ = 12328203264.

The previous prime is 40066664597. The next prime is 40066664681. The reversal of 40066664664 is 46646666004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4935129 + ... + 4943240.

Almost surely, 2^40066664664 is an apocalyptic number.

It is an amenable number.

40066664664 is an abundant number, since it is smaller than the sum of its proper divisors (68397837936).

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

40066664664 is a wasteful number, since it uses less digits than its factorization.

40066664664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9878404 (or 9878387 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 48.

The spelling of 40066664664 in words is "forty billion, sixty-six million, six hundred sixty-four thousand, six hundred sixty-four".