11712821883 has 16 divisors (see below), whose sum is σ = 18006061056. Its totient is φ = 6633809280.

The previous prime is 11712821873. The next prime is 11712821899. The reversal of 11712821883 is 38812821711.

It is a happy number.

It is not a de Polignac number, because 11712821883 - 2⁹ = 11712821371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11712821843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2465563 + ... + 2470308.

It is an arithmetic number, because the mean of its divisors is an integer number (1125378816).

Almost surely, 2^11712821883 is an apocalyptic number.

11712821883 is a deficient number, since it is larger than the sum of its proper divisors (6293239173).

11712821883 is a wasteful number, since it uses less digits than its factorization.

11712821883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4935994.

The product of its digits is 43008, while the sum is 42.

The spelling of 11712821883 in words is "eleven billion, seven hundred twelve million, eight hundred twenty-one thousand, eight hundred eighty-three".