408938056668 has 72 divisors (see below), whose sum is σ = 1094658076512. Its totient is φ = 128277015552.

The previous prime is 408938056643. The next prime is 408938056687. The reversal of 408938056668 is 866650839804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4957296 + ... + 5039112.

It is an arithmetic number, because the mean of its divisors is an integer number (15203584396).

Almost surely, 2^408938056668 is an apocalyptic number.

It is an amenable number.

408938056668 is an abundant number, since it is smaller than the sum of its proper divisors (685720019844).

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

408938056668 is a wasteful number, since it uses less digits than its factorization.

408938056668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90011 (or 90006 counting only the distinct ones).

The product of its (nonzero) digits is 59719680, while the sum is 63.

The spelling of 408938056668 in words is "four hundred eight billion, nine hundred thirty-eight million, fifty-six thousand, six hundred sixty-eight".