13405535255251 has 4 divisors (see below), whose sum is σ = 13412329750512. Its totient is φ = 13398740759992.

The previous prime is 13405535255213. The next prime is 13405535255269. The reversal of 13405535255251 is 15255253550431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13405535255251 - 2³¹ = 13403387771603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13405535255291) 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, 3397244671 + ... + 3397248616.

It is an arithmetic number, because the mean of its divisors is an integer number (3353082437628).

Almost surely, 2^{13405535255251} is an apocalyptic number.

13405535255251 is a deficient number, since it is larger than the sum of its proper divisors (6794495261).

13405535255251 is an equidigital number, since it uses as much as digits as its factorization.

13405535255251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6794495260.

The product of its (nonzero) digits is 2250000, while the sum is 46.

The spelling of 13405535255251 in words is "thirteen trillion, four hundred five billion, five hundred thirty-five million, two hundred fifty-five thousand, two hundred fifty-one".