12994542045 has 20 divisors (see below), whose sum is σ = 23293920540. Its totient is φ = 6930422208.

The previous prime is 12994542037. The next prime is 12994542097. The reversal of 12994542045 is 54024549921.

12994542045 is a `hidden beast` number, since 12 + 9 + 94 + 542 + 0 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2750268249 + 10244273796 = 52443^2 + 101214^2 .

It is not a de Polignac number, because 12994542045 - 2³ = 12994542037 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 Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16042240 + ... + 16043049.

It is an arithmetic number, because the mean of its divisors is an integer number (1164696027).

Almost surely, 2^12994542045 is an apocalyptic number.

12994542045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12994542045 is a deficient number, since it is larger than the sum of its proper divisors (10299378495).

12994542045 is an equidigital number, since it uses as much as digits as its factorization.

12994542045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32085306 (or 32085297 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 12994542045 in words is "twelve billion, nine hundred ninety-four million, five hundred forty-two thousand, forty-five".