11477791791 has 24 divisors (see below), whose sum is σ = 17559996480. Its totient is φ = 7199402496.

The previous prime is 11477791763. The next prime is 11477791837. The reversal of 11477791791 is 19719777411.

11477791791 is a `hidden beast` number, since 1 + 1 + 477 + 79 + 17 + 91 = 666.

It is not a de Polignac number, because 11477791791 - 2¹⁰ = 11477790767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11477798791) 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, 539290 + ... + 560168.

It is an arithmetic number, because the mean of its divisors is an integer number (731666520).

Almost surely, 2^11477791791 is an apocalyptic number.

11477791791 is a deficient number, since it is larger than the sum of its proper divisors (6082204689).

11477791791 is a wasteful number, since it uses less digits than its factorization.

11477791791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24495 (or 24492 counting only the distinct ones).

The product of its digits is 777924, while the sum is 54.

The spelling of 11477791791 in words is "eleven billion, four hundred seventy-seven million, seven hundred ninety-one thousand, seven hundred ninety-one".