12254939145 has 20 divisors (see below), whose sum is σ = 21968113860. Its totient is φ = 6535967328.

The previous prime is 12254939129. The next prime is 12254939171. The reversal of 12254939145 is 54193945221.

It is a happy number.

12254939145 is a `hidden beast` number, since 1 + 2 + 254 + 9 + 391 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3186376704 + 9068562441 = 56448^2 + 95229^2 .

It is not a de Polignac number, because 12254939145 - 2⁴ = 12254939129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12254939145.

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, 15129150 + ... + 15129959.

It is an arithmetic number, because the mean of its divisors is an integer number (1098405693).

Almost surely, 2^12254939145 is an apocalyptic number.

12254939145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12254939145 is a deficient number, since it is larger than the sum of its proper divisors (9713174715).

12254939145 is an equidigital number, since it uses as much as digits as its factorization.

12254939145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30259126 (or 30259117 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The spelling of 12254939145 in words is "twelve billion, two hundred fifty-four million, nine hundred thirty-nine thousand, one hundred forty-five".