11765681271 has 32 divisors (see below), whose sum is σ = 17577728000. Its totient is φ = 7777741824.

The previous prime is 11765681243. The next prime is 11765681273. The reversal of 11765681271 is 17218656711.

11765681271 is a `hidden beast` number, since 1 + 1 + 7 + 6 + 568 + 12 + 71 = 666.

It is not a de Polignac number, because 11765681271 - 2⁷ = 11765681143 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 Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11765681273) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4325850 + ... + 4328568.

It is an arithmetic number, because the mean of its divisors is an integer number (549304000).

Almost surely, 2^11765681271 is an apocalyptic number.

11765681271 is a deficient number, since it is larger than the sum of its proper divisors (5812046729).

11765681271 is a wasteful number, since it uses less digits than its factorization.

11765681271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4020 (or 4014 counting only the distinct ones).

The product of its digits is 141120, while the sum is 45.

The spelling of 11765681271 in words is "eleven billion, seven hundred sixty-five million, six hundred eighty-one thousand, two hundred seventy-one".