11001660988 has 12 divisors (see below), whose sum is σ = 19258371720. Its totient is φ = 5499269072.

The previous prime is 11001660979. The next prime is 11001661003. The reversal of 11001660988 is 88906610011.

It is a super-2 number, since 2×11001660988² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11001660988.

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, 374431 + ... + 402742.

It is an arithmetic number, because the mean of its divisors is an integer number (1604864310).

Almost surely, 2^11001660988 is an apocalyptic number.

It is an amenable number.

11001660988 is a deficient number, since it is larger than the sum of its proper divisors (8256710732).

11001660988 is a wasteful number, since it uses less digits than its factorization.

11001660988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780716 (or 780714 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 40.

The spelling of 11001660988 in words is "eleven billion, one million, six hundred sixty thousand, nine hundred eighty-eight".