408168671780 has 24 divisors (see below), whose sum is σ = 857247897408. Its totient is φ = 163249623648.

The previous prime is 408168671777. The next prime is 408168671809. The reversal of 408168671780 is 87176861804.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 926984 + ... + 1294463.

It is an arithmetic number, because the mean of its divisors is an integer number (35718662392).

Almost surely, 2^408168671780 is an apocalyptic number.

It is an amenable number.

408168671780 is an abundant number, since it is smaller than the sum of its proper divisors (449079225628).

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

408168671780 is a wasteful number, since it uses less digits than its factorization.

408168671780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230643 (or 2230641 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 56.

The spelling of 408168671780 in words is "four hundred eight billion, one hundred sixty-eight million, six hundred seventy-one thousand, seven hundred eighty".