10991315264 has 28 divisors (see below), whose sum is σ = 21862999200. Its totient is φ = 5482528128.

The previous prime is 10991315249. The next prime is 10991315287. The reversal of 10991315264 is 46251319901.

It is a super-2 number, since 2×10991315264² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178124 + ... + 231755.

It is an arithmetic number, because the mean of its divisors is an integer number (780821400).

Almost surely, 2^10991315264 is an apocalyptic number.

It is an amenable number.

10991315264 is a deficient number, since it is larger than the sum of its proper divisors (10871683936).

10991315264 is an equidigital number, since it uses as much as digits as its factorization.

10991315264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410310 (or 410300 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 41.

The spelling of 10991315264 in words is "ten billion, nine hundred ninety-one million, three hundred fifteen thousand, two hundred sixty-four".