11601100660 has 12 divisors (see below), whose sum is σ = 24362311428. Its totient is φ = 4640440256.

The previous prime is 11601100649. The next prime is 11601100661. The reversal of 11601100660 is 6600110611.

It can be written as a sum of positive squares in 2 ways, for example, as 3109846756 + 8491253904 = 55766^2 + 92148^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11601100661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290027497 + ... + 290027536.

It is an arithmetic number, because the mean of its divisors is an integer number (2030192619).

Almost surely, 2^11601100660 is an apocalyptic number.

11601100660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11601100660 is an abundant number, since it is smaller than the sum of its proper divisors (12761210768).

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

11601100660 is a wasteful number, since it uses less digits than its factorization.

11601100660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580055042 (or 580055040 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 11601100660 in words is "eleven billion, six hundred one million, one hundred thousand, six hundred sixty".