878661814751 has 8 divisors (see below), whose sum is σ = 1063254633120. Its totient is φ = 708836421888.

The previous prime is 878661814741. The next prime is 878661814753. The reversal of 878661814751 is 157418166878.

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

It is not a de Polignac number, because 878661814751 - 2⁶ = 878661814687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878661814753) 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, 3691856246 + ... + 3691856483.

It is an arithmetic number, because the mean of its divisors is an integer number (132906829140).

Almost surely, 2^878661814751 is an apocalyptic number.

878661814751 is a deficient number, since it is larger than the sum of its proper divisors (184592818369).

878661814751 is a wasteful number, since it uses less digits than its factorization.

878661814751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7383712753.

The product of its digits is 18063360, while the sum is 62.

The spelling of 878661814751 in words is "eight hundred seventy-eight billion, six hundred sixty-one million, eight hundred fourteen thousand, seven hundred fifty-one".