11387317761 has 12 divisors (see below), whose sum is σ = 16978940160. Its totient is φ = 7346656440.

The previous prime is 11387317751. The next prime is 11387317769. The reversal of 11387317761 is 16771378311.

It is not a de Polignac number, because 11387317761 - 2⁵ = 11387317729 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11387317769) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20407101 + ... + 20407658.

It is an arithmetic number, because the mean of its divisors is an integer number (1414911680).

Almost surely, 2^11387317761 is an apocalyptic number.

It is an amenable number.

11387317761 is a deficient number, since it is larger than the sum of its proper divisors (5591622399).

11387317761 is a wasteful number, since it uses less digits than its factorization.

11387317761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40814796 (or 40814793 counting only the distinct ones).

The product of its digits is 148176, while the sum is 45.

The spelling of 11387317761 in words is "eleven billion, three hundred eighty-seven million, three hundred seventeen thousand, seven hundred sixty-one".