15597697253 has 16 divisors (see below), whose sum is σ = 16031831040. Its totient is φ = 15168147456.

The previous prime is 15597697231. The next prime is 15597697277. The reversal of 15597697253 is 35279679551.

It is a cyclic number.

It is not a de Polignac number, because 15597697253 - 2¹⁰ = 15597696229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 15597697192 and 15597697201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15597697223) 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 in 15 ways as a sum of consecutive naturals, for example, 5591183 + ... + 5593971.

It is an arithmetic number, because the mean of its divisors is an integer number (1001989440).

Almost surely, 2^15597697253 is an apocalyptic number.

It is an amenable number.

15597697253 is a deficient number, since it is larger than the sum of its proper divisors (434133787).

15597697253 is a wasteful number, since it uses less digits than its factorization.

15597697253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3556.

The product of its digits is 17860500, while the sum is 59.

The spelling of 15597697253 in words is "fifteen billion, five hundred ninety-seven million, six hundred ninety-seven thousand, two hundred fifty-three".