11640942565104 has 20 divisors (see below), whose sum is σ = 30072434959976. Its totient is φ = 3880314188352.

The previous prime is 11640942565093. The next prime is 11640942565151. The reversal of 11640942565104 is 40156524904611.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 242519636773 = 11640942565104 / (1 + 1 + 6 + 4 + 0 + 9 + 4 + 2 + 5 + 6 + 5 + 1 + 0 + 4).

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, 121259818339 + ... + 121259818434.

Almost surely, 2^{11640942565104} is an apocalyptic number.

It is an amenable number.

11640942565104 is an abundant number, since it is smaller than the sum of its proper divisors (18431492394872).

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

11640942565104 is a wasteful number, since it uses less digits than its factorization.

11640942565104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242519636784 (or 242519636778 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 48.

The spelling of 11640942565104 in words is "eleven trillion, six hundred forty billion, nine hundred forty-two million, five hundred sixty-five thousand, one hundred four".