10999998864 has 60 divisors (see below), whose sum is σ = 30904607916. Its totient is φ = 3652386816.

The previous prime is 10999998857. The next prime is 10999998887. The reversal of 10999998864 is 46889999901.

It can be written as a sum of positive squares in 2 ways, for example, as 4886010000 + 6113988864 = 69900^2 + 78192^2 .

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 10999998792 and 10999998801.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111609 + ... + 185624.

Almost surely, 2^10999998864 is an apocalyptic number.

It is an amenable number.

10999998864 is an abundant number, since it is smaller than the sum of its proper divisors (19904609052).

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

10999998864 is a wasteful number, since it uses less digits than its factorization.

10999998864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297504 (or 297495 counting only the distinct ones).

The product of its (nonzero) digits is 90699264, while the sum is 72.

The spelling of 10999998864 in words is "ten billion, nine hundred ninety-nine million, nine hundred ninety-eight thousand, eight hundred sixty-four".