11597943553 has 8 divisors (see below), whose sum is σ = 13297415040. Its totient is φ = 9909127680.

The previous prime is 11597943493. The next prime is 11597943589. The reversal of 11597943553 is 35534979511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11597943553 - 2⁹ = 11597943041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11597943553.

It is not an unprimeable number, because it can be changed into a prime (11597973553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2661568 + ... + 2665921.

It is an arithmetic number, because the mean of its divisors is an integer number (1662176880).

Almost surely, 2^11597943553 is an apocalyptic number.

It is an amenable number.

11597943553 is a deficient number, since it is larger than the sum of its proper divisors (1699471487).

11597943553 is an equidigital number, since it uses as much as digits as its factorization.

11597943553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5327807.

The product of its digits is 2551500, while the sum is 52.

The spelling of 11597943553 in words is "eleven billion, five hundred ninety-seven million, nine hundred forty-three thousand, five hundred fifty-three".