11656004231765 has 24 divisors (see below), whose sum is σ = 15105424691808. Its totient is φ = 8628581777760.

The previous prime is 11656004231761. The next prime is 11656004231771. The reversal of 11656004231765 is 56713240065611.

It is a happy number.

It is not a de Polignac number, because 11656004231765 - 2² = 11656004231761 is a prime.

It is a super-3 number, since 3×11656004231765³ (a number of 40 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11656004231761) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75010991 + ... + 75166220.

It is an arithmetic number, because the mean of its divisors is an integer number (629392695492).

Almost surely, 2^{11656004231765} is an apocalyptic number.

It is an amenable number.

11656004231765 is a deficient number, since it is larger than the sum of its proper divisors (3449420460043).

11656004231765 is a wasteful number, since it uses less digits than its factorization.

11656004231765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150177297 (or 150177278 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 47.

The spelling of 11656004231765 in words is "eleven trillion, six hundred fifty-six billion, four million, two hundred thirty-one thousand, seven hundred sixty-five".