13531145553 has 8 divisors (see below), whose sum is σ = 20046141600. Its totient is φ = 9020763684.

The previous prime is 13531145543. The next prime is 13531145591. The reversal of 13531145553 is 35554113531.

13531145553 is a `hidden beast` number, since 1 + 3 + 53 + 11 + 45 + 553 = 666.

It is not a de Polignac number, because 13531145553 - 2⁶ = 13531145489 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13531145513) 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, 250576743 + ... + 250576796.

It is an arithmetic number, because the mean of its divisors is an integer number (2505767700).

Almost surely, 2^13531145553 is an apocalyptic number.

It is an amenable number.

13531145553 is a deficient number, since it is larger than the sum of its proper divisors (6514996047).

13531145553 is an equidigital number, since it uses as much as digits as its factorization.

13531145553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501153548 (or 501153542 counting only the distinct ones).

The product of its digits is 67500, while the sum is 36.

The spelling of 13531145553 in words is "thirteen billion, five hundred thirty-one million, one hundred forty-five thousand, five hundred fifty-three".