12023139771 has 16 divisors (see below), whose sum is σ = 17969692320. Its totient is φ = 7944491520.

The previous prime is 12023139769. The next prime is 12023139781. The reversal of 12023139771 is 17793132021.

It is a happy number.

It is not a de Polignac number, because 12023139771 - 2¹ = 12023139769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12023139781) 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, 1967310 + ... + 1973411.

It is an arithmetic number, because the mean of its divisors is an integer number (1123105770).

Almost surely, 2^12023139771 is an apocalyptic number.

12023139771 is a deficient number, since it is larger than the sum of its proper divisors (5946552549).

12023139771 is a wasteful number, since it uses less digits than its factorization.

12023139771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3940843 (or 3940837 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The spelling of 12023139771 in words is "twelve billion, twenty-three million, one hundred thirty-nine thousand, seven hundred seventy-one".