408115388478 has 96 divisors (see below), whose sum is σ = 963505863936. Its totient is φ = 112882339584.

The previous prime is 408115388437. The next prime is 408115388501. The reversal of 408115388478 is 874883511804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8752101 + ... + 8798607.

It is an arithmetic number, because the mean of its divisors is an integer number (10036519416).

Almost surely, 2^408115388478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 408115388478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (481752931968).

408115388478 is an abundant number, since it is smaller than the sum of its proper divisors (555390475458).

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

408115388478 is a wasteful number, since it uses less digits than its factorization.

408115388478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46718 (or 46675 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 57.

The spelling of 408115388478 in words is "four hundred eight billion, one hundred fifteen million, three hundred eighty-eight thousand, four hundred seventy-eight".