8178878055388 has 48 divisors (see below), whose sum is σ = 14955892963200. Its totient is φ = 3908795304960.

The previous prime is 8178878055371. The next prime is 8178878055401. The reversal of 8178878055388 is 8835508788718.

It is a congruent number.

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, 4106868 + ... + 5764036.

It is an arithmetic number, because the mean of its divisors is an integer number (311581103400).

Almost surely, 2^{8178878055388} is an apocalyptic number.

It is an amenable number.

8178878055388 is a deficient number, since it is larger than the sum of its proper divisors (6777014907812).

8178878055388 is a wasteful number, since it uses less digits than its factorization.

8178878055388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657630 (or 1657628 counting only the distinct ones).

The product of its (nonzero) digits is 963379200, while the sum is 76.

The spelling of 8178878055388 in words is "eight trillion, one hundred seventy-eight billion, eight hundred seventy-eight million, fifty-five thousand, three hundred eighty-eight".