878356617400 has 24 divisors (see below), whose sum is σ = 2042179135920. Its totient is φ = 351342646880.

The previous prime is 878356617379. The next prime is 878356617421. The reversal of 878356617400 is 4716653878.

It is an interprime number because it is at equal distance from previous prime (878356617379) and next prime (878356617421).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2195891344 + ... + 2195891743.

It is an arithmetic number, because the mean of its divisors is an integer number (85090797330).

Almost surely, 2^878356617400 is an apocalyptic number.

It is an amenable number.

878356617400 is an abundant number, since it is smaller than the sum of its proper divisors (1163822518520).

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

878356617400 is a wasteful number, since it uses less digits than its factorization.

878356617400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4391783103 (or 4391783094 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 878356617400 in words is "eight hundred seventy-eight billion, three hundred fifty-six million, six hundred seventeen thousand, four hundred".