12989695617 has 12 divisors (see below), whose sum is σ = 18769363860. Its totient is φ = 8656810848.

The previous prime is 12989695517. The next prime is 12989695627. The reversal of 12989695617 is 71659698921.

12989695617 is a `hidden beast` number, since 1 + 2 + 9 + 8 + 9 + 6 + 9 + 5 + 617 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8917213761 + 4072481856 = 94431^2 + 63816^2 .

It is not a de Polignac number, because 12989695617 - 2⁷ = 12989695489 is a prime.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12989695627) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 221142 + ... + 273647.

It is an arithmetic number, because the mean of its divisors is an integer number (1564113655).

Almost surely, 2^12989695617 is an apocalyptic number.

It is an amenable number.

12989695617 is a deficient number, since it is larger than the sum of its proper divisors (5779668243).

12989695617 is a wasteful number, since it uses less digits than its factorization.

12989695617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497712 (or 497709 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 63.

The spelling of 12989695617 in words is "twelve billion, nine hundred eighty-nine million, six hundred ninety-five thousand, six hundred seventeen".