12645246475 has 12 divisors (see below), whose sum is σ = 16361850096. Its totient is φ = 9676362080.

The previous prime is 12645246463. The next prime is 12645246479. The reversal of 12645246475 is 57464254621.

It is not a de Polignac number, because 12645246475 - 2¹⁷ = 12645115403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12645246479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10995292 + ... + 10996441.

It is an arithmetic number, because the mean of its divisors is an integer number (1363487508).

Almost surely, 2^12645246475 is an apocalyptic number.

12645246475 is a deficient number, since it is larger than the sum of its proper divisors (3716603621).

12645246475 is a wasteful number, since it uses less digits than its factorization.

12645246475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21991766 (or 21991761 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 46.

The spelling of 12645246475 in words is "twelve billion, six hundred forty-five million, two hundred forty-six thousand, four hundred seventy-five".