13526806393 has 6 divisors (see below), whose sum is σ = 13691750474. Its totient is φ = 13363826016.

The previous prime is 13526806373. The next prime is 13526806427. The reversal of 13526806393 is 39360862531.

It can be written as a sum of positive squares in only one way, i.e., 12816956944 + 709849449 = 113212^2 + 26643^2 .

It is not a de Polignac number, because 13526806393 - 2²¹ = 13524709241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13526806343) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 974880 + ... + 988657.

Almost surely, 2^13526806393 is an apocalyptic number.

It is an amenable number.

13526806393 is a deficient number, since it is larger than the sum of its proper divisors (164944081).

13526806393 is an frugal number, since it uses more digits than its factorization.

13526806393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963703 (or 1963620 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 46.

The spelling of 13526806393 in words is "thirteen billion, five hundred twenty-six million, eight hundred six thousand, three hundred ninety-three".