878426860128544 has 12 divisors (see below), whose sum is σ = 1729402880878134. Its totient is φ = 439213430064256.

The previous prime is 878426860128539. The next prime is 878426860128551. The reversal of 878426860128544 is 445821068624878.

It can be written as a sum of positive squares in only one way, i.e., 876847565238544 + 1579294890000 = 29611612^2 + 1256700^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13725419689477 + ... + 13725419689540.

Almost surely, 2^{878426860128544} is an apocalyptic number.

It is an amenable number.

878426860128544 is a deficient number, since it is larger than the sum of its proper divisors (850976020749590).

878426860128544 is a wasteful number, since it uses less digits than its factorization.

878426860128544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27450839379027 (or 27450839379019 counting only the distinct ones).

The product of its (nonzero) digits is 1321205760, while the sum is 73.

The spelling of 878426860128544 in words is "eight hundred seventy-eight trillion, four hundred twenty-six billion, eight hundred sixty million, one hundred twenty-eight thousand, five hundred forty-four".