10663561660 has 24 divisors (see below), whose sum is σ = 23115851136. Its totient is φ = 4127830080.

The previous prime is 10663561613. The next prime is 10663561709. The reversal of 10663561660 is 6616536601.

It is a super-2 number, since 2×10663561660² (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 7 ways as a sum of consecutive naturals, for example, 8599027 + ... + 8600266.

It is an arithmetic number, because the mean of its divisors is an integer number (963160464).

Almost surely, 2^10663561660 is an apocalyptic number.

10663561660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10663561660 is an abundant number, since it is smaller than the sum of its proper divisors (12452289476).

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

10663561660 is a wasteful number, since it uses less digits than its factorization.

10663561660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17199333 (or 17199331 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 40.

The spelling of 10663561660 in words is "ten billion, six hundred sixty-three million, five hundred sixty-one thousand, six hundred sixty".