11307272661 has 24 divisors (see below), whose sum is σ = 16992395264. Its totient is φ = 7237550880.

The previous prime is 11307272657. The next prime is 11307272663. The reversal of 11307272661 is 16627270311.

It is a happy number.

It is not a de Polignac number, because 11307272661 - 2² = 11307272657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11307272663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124126 + ... + 194991.

Almost surely, 2^11307272661 is an apocalyptic number.

It is an amenable number.

11307272661 is a deficient number, since it is larger than the sum of its proper divisors (5685122603).

11307272661 is a wasteful number, since it uses less digits than its factorization.

11307272661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319281 (or 319278 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The spelling of 11307272661 in words is "eleven billion, three hundred seven million, two hundred seventy-two thousand, six hundred sixty-one".