12494916639 has 24 divisors (see below), whose sum is σ = 18352620000. Its totient is φ = 8189576640.

The previous prime is 12494916617. The next prime is 12494916673. The reversal of 12494916639 is 93661949421.

It is a happy number.

12494916639 is a `hidden beast` number, since 1 + 2 + 494 + 91 + 6 + 63 + 9 = 666.

It is not a de Polignac number, because 12494916639 - 2²³ = 12486528031 is a prime.

It is a super-2 number, since 2×12494916639² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12494916839) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1642657 + ... + 1650245.

It is an arithmetic number, because the mean of its divisors is an integer number (764692500).

Almost surely, 2^12494916639 is an apocalyptic number.

12494916639 is a deficient number, since it is larger than the sum of its proper divisors (5857703361).

12494916639 is a wasteful number, since it uses less digits than its factorization.

12494916639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10655 (or 10652 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 54.

The spelling of 12494916639 in words is "twelve billion, four hundred ninety-four million, nine hundred sixteen thousand, six hundred thirty-nine".