13432520197 has 2 divisors, whose sum is σ = 13432520198. Its totient is φ = 13432520196.

The previous prime is 13432520119. The next prime is 13432520249. The reversal of 13432520197 is 79102523431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12847315716 + 585204481 = 113346^2 + 24191^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13432520197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13432520597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6716260098 + 6716260099.

It is an arithmetic number, because the mean of its divisors is an integer number (6716260099).

Almost surely, 2^13432520197 is an apocalyptic number.

It is an amenable number.

13432520197 is a deficient number, since it is larger than the sum of its proper divisors (1).

13432520197 is an equidigital number, since it uses as much as digits as its factorization.

13432520197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 37.

The spelling of 13432520197 in words is "thirteen billion, four hundred thirty-two million, five hundred twenty thousand, one hundred ninety-seven".