13426525643 has 4 divisors (see below), whose sum is σ = 13545344568. Its totient is φ = 13307706720.

The previous prime is 13426525621. The next prime is 13426525681. The reversal of 13426525643 is 34652562431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34652562431 = 67759 ⋅511409.

It is a cyclic number.

It is not a de Polignac number, because 13426525643 - 2¹² = 13426521547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13426525643.

It is not an unprimeable number, because it can be changed into a prime (13426525613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59409293 + ... + 59409518.

It is an arithmetic number, because the mean of its divisors is an integer number (3386336142).

Almost surely, 2^13426525643 is an apocalyptic number.

13426525643 is a deficient number, since it is larger than the sum of its proper divisors (118818925).

13426525643 is a wasteful number, since it uses less digits than its factorization.

13426525643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118818924.

The product of its digits is 518400, while the sum is 41.

The spelling of 13426525643 in words is "thirteen billion, four hundred twenty-six million, five hundred twenty-five thousand, six hundred forty-three".