78880415404 has 72 divisors (see below), whose sum is σ = 163664233152. Its totient is φ = 33159248640.

The previous prime is 78880415359. The next prime is 78880415413. The reversal of 78880415404 is 40451408887.

It is a Harshad number since it is a multiple of its sum of digits (49).

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, 4378864 + ... + 4396840.

Almost surely, 2^78880415404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78880415404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81832116576).

78880415404 is an abundant number, since it is smaller than the sum of its proper divisors (84783817748).

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

78880415404 is a wasteful number, since it uses less digits than its factorization.

78880415404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18423 (or 18414 counting only the distinct ones).

The product of its (nonzero) digits is 1146880, while the sum is 49.

The spelling of 78880415404 in words is "seventy-eight billion, eight hundred eighty million, four hundred fifteen thousand, four hundred four".