12605776623 has 24 divisors (see below), whose sum is σ = 19878455376. Its totient is φ = 7634169600.

The previous prime is 12605776619. The next prime is 12605776627. The reversal of 12605776623 is 32667750621.

12605776623 is a `hidden beast` number, since 12 + 6 + 0 + 5 + 7 + 7 + 6 + 623 = 666.

It is an interprime number because it is at equal distance from previous prime (12605776619) and next prime (12605776627).

It is not a de Polignac number, because 12605776623 - 2² = 12605776619 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (12605776627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87961 + ... + 181517.

It is an arithmetic number, because the mean of its divisors is an integer number (828268974).

Almost surely, 2^12605776623 is an apocalyptic number.

12605776623 is a deficient number, since it is larger than the sum of its proper divisors (7272678753).

12605776623 is a wasteful number, since it uses less digits than its factorization.

12605776623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94935 (or 94932 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The spelling of 12605776623 in words is "twelve billion, six hundred five million, seven hundred seventy-six thousand, six hundred twenty-three".