878642936442 has 96 divisors (see below), whose sum is σ = 1926761840640. Its totient is φ = 289365864480.

The previous prime is 878642936441. The next prime is 878642936453. The reversal of 878642936442 is 244639246878.

878642936442 is a `hidden beast` number, since 87 + 8 + 64 + 29 + 36 + 442 = 666.

It is a super-3 number, since 3×878642936442³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 878642936442.

It is not an unprimeable number, because it can be changed into a prime (878642936441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 317542143 + ... + 317544909.

It is an arithmetic number, because the mean of its divisors is an integer number (20070435840).

Almost surely, 2^878642936442 is an apocalyptic number.

878642936442 is an abundant number, since it is smaller than the sum of its proper divisors (1048118904198).

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

878642936442 is a wasteful number, since it uses less digits than its factorization.

878642936442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3568 (or 3565 counting only the distinct ones).

The product of its digits is 111476736, while the sum is 63.

The spelling of 878642936442 in words is "eight hundred seventy-eight billion, six hundred forty-two million, nine hundred thirty-six thousand, four hundred forty-two".