12657144735 has 12 divisors (see below), whose sum is σ = 21939050952. Its totient is φ = 6750477168.

The previous prime is 12657144713. The next prime is 12657144749. The reversal of 12657144735 is 53744175621.

12657144735 is a `hidden beast` number, since 1 + 2 + 6 + 571 + 4 + 4 + 73 + 5 = 666.

It is not a de Polignac number, because 12657144735 - 2¹⁶ = 12657079199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 281269883 = 12657144735 / (1 + 2 + 6 + 5 + 7 + 1 + 4 + 4 + 7 + 3 + 5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140634897 + ... + 140634986.

It is an arithmetic number, because the mean of its divisors is an integer number (1828254246).

Almost surely, 2^12657144735 is an apocalyptic number.

12657144735 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12657144735 is a deficient number, since it is larger than the sum of its proper divisors (9281906217).

12657144735 is a wasteful number, since it uses less digits than its factorization.

12657144735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281269894 (or 281269891 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The spelling of 12657144735 in words is "twelve billion, six hundred fifty-seven million, one hundred forty-four thousand, seven hundred thirty-five".