878642936445 has 16 divisors (see below), whose sum is σ = 1406987695872. Its totient is φ = 468223233600.

The previous prime is 878642936441. The next prime is 878642936453. The reversal of 878642936445 is 544639246878.

It is not a de Polignac number, because 878642936445 - 2² = 878642936441 is a prime.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 24126981 + ... + 24163370.

It is an arithmetic number, because the mean of its divisors is an integer number (87936730992).

Almost surely, 2^878642936445 is an apocalyptic number.

It is an amenable number.

878642936445 is a deficient number, since it is larger than the sum of its proper divisors (528344759427).

878642936445 is a wasteful number, since it uses less digits than its factorization.

878642936445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48291572.

The product of its digits is 278691840, while the sum is 66.

The spelling of 878642936445 in words is "eight hundred seventy-eight billion, six hundred forty-two million, nine hundred thirty-six thousand, four hundred forty-five".