11771609923 has 16 divisors (see below), whose sum is σ = 12469092480. Its totient is φ = 11082118464.

The previous prime is 11771609911. The next prime is 11771609929. The reversal of 11771609923 is 32990617711.

It is a cyclic number.

It is not a de Polignac number, because 11771609923 - 2⁹ = 11771609411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11771609929) 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, 2490040 + ... + 2494762.

It is an arithmetic number, because the mean of its divisors is an integer number (779318280).

Almost surely, 2^11771609923 is an apocalyptic number.

11771609923 is a deficient number, since it is larger than the sum of its proper divisors (697482557).

11771609923 is a wasteful number, since it uses less digits than its factorization.

11771609923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5538.

The product of its (nonzero) digits is 142884, while the sum is 46.

The spelling of 11771609923 in words is "eleven billion, seven hundred seventy-one million, six hundred nine thousand, nine hundred twenty-three".