13351520553 has 8 divisors (see below), whose sum is σ = 20345174208. Its totient is φ = 7629440304.

The previous prime is 13351520551. The next prime is 13351520557. The reversal of 13351520553 is 35502515331.

It is a happy number.

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

It is not a de Polignac number, because 13351520553 - 2¹ = 13351520551 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13351520551) 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, 317893326 + ... + 317893367.

It is an arithmetic number, because the mean of its divisors is an integer number (2543146776).

Almost surely, 2^13351520553 is an apocalyptic number.

It is an amenable number.

13351520553 is a deficient number, since it is larger than the sum of its proper divisors (6993653655).

13351520553 is an equidigital number, since it uses as much as digits as its factorization.

13351520553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635786703.

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

The spelling of 13351520553 in words is "thirteen billion, three hundred fifty-one million, five hundred twenty thousand, five hundred fifty-three".