11001661696 has 36 divisors (see below), whose sum is σ = 22553890492. Its totient is φ = 5352155136.

The previous prime is 11001661687. The next prime is 11001661709. The reversal of 11001661696 is 69616610011.

It can be written as a sum of positive squares in 2 ways, for example, as 4591417600 + 6410244096 = 67760^2 + 80064^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (37).

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, 571275 + ... + 590218.

Almost surely, 2^11001661696 is an apocalyptic number.

11001661696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11001661696 is an abundant number, since it is smaller than the sum of its proper divisors (11552228796).

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

11001661696 is an equidigital number, since it uses as much as digits as its factorization.

11001661696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161546 (or 1161532 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 37.

The spelling of 11001661696 in words is "eleven billion, one million, six hundred sixty-one thousand, six hundred ninety-six".