878923117420 has 24 divisors (see below), whose sum is σ = 1885009581504. Its totient is φ = 344089049856.

The previous prime is 878923117349. The next prime is 878923117421. The reversal of 878923117420 is 24711329878.

It is a super-2 number, since 2×878923117420² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (878923117421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 467511357 + ... + 467513236.

It is an arithmetic number, because the mean of its divisors is an integer number (78542065896).

Almost surely, 2^878923117420 is an apocalyptic number.

It is an amenable number.

878923117420 is an abundant number, since it is smaller than the sum of its proper divisors (1006086464084).

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

878923117420 is a wasteful number, since it uses less digits than its factorization.

878923117420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935024649 (or 935024647 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 878923117420 in words is "eight hundred seventy-eight billion, nine hundred twenty-three million, one hundred seventeen thousand, four hundred twenty".