408138317500 has 30 divisors (see below), whose sum is σ = 892516878176. Its totient is φ = 163255326000.

The previous prime is 408138317479. The next prime is 408138317557. The reversal of 408138317500 is 5713831804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 81625164 + ... + 81630163.

Almost surely, 2^408138317500 is an apocalyptic number.

It is an amenable number.

408138317500 is an abundant number, since it is smaller than the sum of its proper divisors (484378560676).

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

408138317500 is a wasteful number, since it uses less digits than its factorization.

408138317500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163255351 (or 163255334 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 408138317500 in words is "four hundred eight billion, one hundred thirty-eight million, three hundred seventeen thousand, five hundred".