12645521311426 has 16 divisors (see below), whose sum is σ = 19047241445760. Its totient is φ = 6296441526720.

The previous prime is 12645521311349. The next prime is 12645521311469. The reversal of 12645521311426 is 62411312554621.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52958235 + ... + 53196481.

It is an arithmetic number, because the mean of its divisors is an integer number (1190452590360).

Almost surely, 2^{12645521311426} is an apocalyptic number.

12645521311426 is a deficient number, since it is larger than the sum of its proper divisors (6401720134334).

12645521311426 is a wasteful number, since it uses less digits than its factorization.

12645521311426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348609.

The product of its digits is 345600, while the sum is 43.

The spelling of 12645521311426 in words is "twelve trillion, six hundred forty-five billion, five hundred twenty-one million, three hundred eleven thousand, four hundred twenty-six".