12745669397 has 12 divisors (see below), whose sum is σ = 13331359020. Its totient is φ = 12184706688.

The previous prime is 12745669367. The next prime is 12745669411. The reversal of 12745669397 is 79396654721.

It can be written as a sum of positive squares in 2 ways, for example, as 8604232081 + 4141437316 = 92759^2 + 64354^2 .

It is not a de Polignac number, because 12745669397 - 2¹⁴ = 12745653013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12745669367) 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, 1120583 + ... + 1131899.

It is an arithmetic number, because the mean of its divisors is an integer number (1110946585).

Almost surely, 2^12745669397 is an apocalyptic number.

It is an amenable number.

12745669397 is a deficient number, since it is larger than the sum of its proper divisors (585689623).

12745669397 is a wasteful number, since it uses less digits than its factorization.

12745669397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13492 (or 13469 counting only the distinct ones).

The product of its digits is 17146080, while the sum is 59.

The spelling of 12745669397 in words is "twelve billion, seven hundred forty-five million, six hundred sixty-nine thousand, three hundred ninety-seven".