10817988856 has 8 divisors (see below), whose sum is σ = 20283729120. Its totient is φ = 5408994424.

The previous prime is 10817988833. The next prime is 10817988887. The reversal of 10817988856 is 65888971801.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 10817988794 and 10817988803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 676124296 + ... + 676124311.

It is an arithmetic number, because the mean of its divisors is an integer number (2535466140).

Almost surely, 2^10817988856 is an apocalyptic number.

It is an amenable number.

10817988856 is a deficient number, since it is larger than the sum of its proper divisors (9465740264).

10817988856 is a wasteful number, since it uses less digits than its factorization.

10817988856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352248613 (or 1352248609 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 61.

The spelling of 10817988856 in words is "ten billion, eight hundred seventeen million, nine hundred eighty-eight thousand, eight hundred fifty-six".