13155451221353 has 4 divisors (see below), whose sum is σ = 15034801395840. Its totient is φ = 11276101046868.

The previous prime is 13155451221337. The next prime is 13155451221359. The reversal of 13155451221353 is 35312215455131.

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 not a de Polignac number, because 13155451221353 - 2⁴ = 13155451221337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13155451221353.

It is not an unprimeable number, because it can be changed into a prime (13155451221359) 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, 939675087233 + ... + 939675087246.

It is an arithmetic number, because the mean of its divisors is an integer number (3758700348960).

Almost surely, 2^{13155451221353} is an apocalyptic number.

It is an amenable number.

13155451221353 is a deficient number, since it is larger than the sum of its proper divisors (1879350174487).

13155451221353 is an equidigital number, since it uses as much as digits as its factorization.

13155451221353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1879350174486.

The product of its digits is 270000, while the sum is 41.

Adding to 13155451221353 its reverse (35312215455131), we get a palindrome (48467666676484).

The spelling of 13155451221353 in words is "thirteen trillion, one hundred fifty-five billion, four hundred fifty-one million, two hundred twenty-one thousand, three hundred fifty-three".