13553951597 has 2 divisors, whose sum is σ = 13553951598. Its totient is φ = 13553951596.

The previous prime is 13553951563. The next prime is 13553951623. The reversal of 13553951597 is 79515935531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13012877476 + 541074121 = 114074^2 + 23261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13553951597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13553951197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6776975798 + 6776975799.

It is an arithmetic number, because the mean of its divisors is an integer number (6776975799).

Almost surely, 2^13553951597 is an apocalyptic number.

It is an amenable number.

13553951597 is a deficient number, since it is larger than the sum of its proper divisors (1).

13553951597 is an equidigital number, since it uses as much as digits as its factorization.

13553951597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3189375, while the sum is 53.

The spelling of 13553951597 in words is "thirteen billion, five hundred fifty-three million, nine hundred fifty-one thousand, five hundred ninety-seven".