878487313866657 has 8 divisors (see below), whose sum is σ = 1277799729260640. Its totient is φ = 532416553858560.

The previous prime is 878487313866623. The next prime is 878487313866661. The reversal of 878487313866657 is 756668313784878.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 878487313866657 - 2⁶ = 878487313866593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (878487313866697) 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, 13310413846432 + ... + 13310413846497.

It is an arithmetic number, because the mean of its divisors is an integer number (159724966157580).

Almost surely, 2^{878487313866657} is an apocalyptic number.

It is an amenable number.

878487313866657 is a deficient number, since it is larger than the sum of its proper divisors (399312415393983).

878487313866657 is a wasteful number, since it uses less digits than its factorization.

878487313866657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26620827692943.

The product of its digits is 54623600640, while the sum is 87.

The spelling of 878487313866657 in words is "eight hundred seventy-eight trillion, four hundred eighty-seven billion, three hundred thirteen million, eight hundred sixty-six thousand, six hundred fifty-seven".