40402665099 has 12 divisors (see below), whose sum is σ = 60896770896. Its totient is φ = 25764018192.

The previous prime is 40402665073. The next prime is 40402665119. The reversal of 40402665099 is 99056620404.

40402665099 is a `hidden beast` number, since 40 + 40 + 2 + 66 + 509 + 9 = 666.

It is not a de Polignac number, because 40402665099 - 2¹¹ = 40402663051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40402665049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97590772 + ... + 97591185.

It is an arithmetic number, because the mean of its divisors is an integer number (5074730908).

Almost surely, 2^40402665099 is an apocalyptic number.

40402665099 is a deficient number, since it is larger than the sum of its proper divisors (20494105797).

40402665099 is a wasteful number, since it uses less digits than its factorization.

40402665099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195181986 (or 195181983 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 40402665099 in words is "forty billion, four hundred two million, six hundred sixty-five thousand, ninety-nine".