12269638539 has 20 divisors (see below), whose sum is σ = 18335655624. Its totient is φ = 8176663584.

The previous prime is 12269638501. The next prime is 12269638547. The reversal of 12269638539 is 93583696221.

12269638539 is a `hidden beast` number, since 1 + 226 + 9 + 6 + 385 + 39 = 666.

It is not a de Polignac number, because 12269638539 - 2¹⁶ = 12269573003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12269636539) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 197664 + ... + 252210.

Almost surely, 2^12269638539 is an apocalyptic number.

12269638539 is a deficient number, since it is larger than the sum of its proper divisors (6066017085).

12269638539 is an equidigital number, since it uses as much as digits as its factorization.

12269638539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57336 (or 57327 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The spelling of 12269638539 in words is "twelve billion, two hundred sixty-nine million, six hundred thirty-eight thousand, five hundred thirty-nine".