879878998654656 has 1792 divisors, whose sum is σ = 3355214835302400. Its totient is φ = 197108984217600.

The previous prime is 879878998654603. The next prime is 879878998654681. The reversal of 879878998654656 is 656456899878978.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 45050371611 + ... + 45050391141.

It is an arithmetic number, because the mean of its divisors is an integer number (1872329707200).

Almost surely, 2^{879878998654656} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 879878998654656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1677607417651200).

879878998654656 is an abundant number, since it is smaller than the sum of its proper divisors (2475335836647744).

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

879878998654656 is a wasteful number, since it uses less digits than its factorization.

879878998654656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19695 (or 19659 counting only the distinct ones).

The product of its digits is 3160365465600, while the sum is 105.

The spelling of 879878998654656 in words is "eight hundred seventy-nine trillion, eight hundred seventy-eight billion, nine hundred ninety-eight million, six hundred fifty-four thousand, six hundred fifty-six".