12745342657722 has 32 divisors (see below), whose sum is σ = 26113503354624. Its totient is φ = 4144653228800.

The previous prime is 12745342657721. The next prime is 12745342657739. The reversal of 12745342657722 is 22775624354721.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12745342657721) 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 15 ways as a sum of consecutive naturals, for example, 4864447 + ... + 7010957.

It is an arithmetic number, because the mean of its divisors is an integer number (816046979832).

Almost surely, 2^{12745342657722} is an apocalyptic number.

12745342657722 is an abundant number, since it is smaller than the sum of its proper divisors (13368160696902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12745342657722 is a wasteful number, since it uses less digits than its factorization.

12745342657722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170694.

The product of its digits is 39513600, while the sum is 57.

The spelling of 12745342657722 in words is "twelve trillion, seven hundred forty-five billion, three hundred forty-two million, six hundred fifty-seven thousand, seven hundred twenty-two".