13551032553 has 4 divisors (see below), whose sum is σ = 18068043408. Its totient is φ = 9034021700.

The previous prime is 13551032519. The next prime is 13551032609. The reversal of 13551032553 is 35523015531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13551032553 - 2²⁶ = 13483923689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13551033553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2258505423 + ... + 2258505428.

It is an arithmetic number, because the mean of its divisors is an integer number (4517010852).

Almost surely, 2^13551032553 is an apocalyptic number.

It is an amenable number.

13551032553 is a deficient number, since it is larger than the sum of its proper divisors (4517010855).

13551032553 is an equidigital number, since it uses as much as digits as its factorization.

13551032553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4517010854.

The product of its (nonzero) digits is 33750, while the sum is 33.

The spelling of 13551032553 in words is "thirteen billion, five hundred fifty-one million, thirty-two thousand, five hundred fifty-three".