13066631251 has 4 divisors (see below), whose sum is σ = 13090090752. Its totient is φ = 13043171752.

The previous prime is 13066631233. The next prime is 13066631261. The reversal of 13066631251 is 15213666031.

13066631251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13066631251 - 2³³ = 4476696659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13066631261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11728915 + ... + 11730028.

It is an arithmetic number, because the mean of its divisors is an integer number (3272522688).

Almost surely, 2^13066631251 is an apocalyptic number.

13066631251 is a deficient number, since it is larger than the sum of its proper divisors (23459501).

13066631251 is an equidigital number, since it uses as much as digits as its factorization.

13066631251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23459500.

The product of its (nonzero) digits is 19440, while the sum is 34.

The spelling of 13066631251 in words is "thirteen billion, sixty-six million, six hundred thirty-one thousand, two hundred fifty-one".