78085838404 has 48 divisors (see below), whose sum is σ = 169391416320. Its totient is φ = 30728586240.

The previous prime is 78085838381. The next prime is 78085838423. The reversal of 78085838404 is 40483858087.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1981044 + ... + 2020075.

It is an arithmetic number, because the mean of its divisors is an integer number (3528987840).

Almost surely, 2^78085838404 is an apocalyptic number.

It is an amenable number.

78085838404 is an abundant number, since it is smaller than the sum of its proper divisors (91305577916).

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

78085838404 is a wasteful number, since it uses less digits than its factorization.

78085838404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4001188 (or 4001186 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 55.

The spelling of 78085838404 in words is "seventy-eight billion, eighty-five million, eight hundred thirty-eight thousand, four hundred four".