878742923904 has 96 divisors (see below), whose sum is σ = 2576385314100. Its totient is φ = 287387602944.

The previous prime is 878742923873. The next prime is 878742923951. The reversal of 878742923904 is 409329247878.

878742923904 is a `hidden beast` number, since 87 + 87 + 4 + 2 + 92 + 390 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 848241000000 + 30501923904 = 921000^2 + 174648^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×878742923904² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7135149 + ... + 7257260.

Almost surely, 2^878742923904 is an apocalyptic number.

It is an amenable number.

878742923904 is an abundant number, since it is smaller than the sum of its proper divisors (1697642390196).

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

878742923904 is a wasteful number, since it uses less digits than its factorization.

878742923904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14392482 (or 14392467 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 63.

The spelling of 878742923904 in words is "eight hundred seventy-eight billion, seven hundred forty-two million, nine hundred twenty-three thousand, nine hundred four".