12641690439 has 64 divisors (see below), whose sum is σ = 21902561280. Its totient is φ = 7056149760.

The previous prime is 12641690431. The next prime is 12641690459. The reversal of 12641690439 is 93409614621.

12641690439 is a `hidden beast` number, since 126 + 4 + 1 + 6 + 90 + 439 = 666.

It is not a de Polignac number, because 12641690439 - 2³ = 12641690431 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12641690394 and 12641690403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12641690431) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5870587 + ... + 5872739.

It is an arithmetic number, because the mean of its divisors is an integer number (342227520).

Almost surely, 2^12641690439 is an apocalyptic number.

12641690439 is a deficient number, since it is larger than the sum of its proper divisors (9260870841).

12641690439 is a wasteful number, since it uses less digits than its factorization.

12641690439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2877 (or 2871 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 12641690439 in words is "twelve billion, six hundred forty-one million, six hundred ninety thousand, four hundred thirty-nine".