13151946427 has 4 divisors (see below), whose sum is σ = 13199426656. Its totient is φ = 13104466200.

The previous prime is 13151946413. The next prime is 13151946439. The reversal of 13151946427 is 72464915131.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13151946427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13151946497) 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, 23739699 + ... + 23740252.

It is an arithmetic number, because the mean of its divisors is an integer number (3299856664).

Almost surely, 2^13151946427 is an apocalyptic number.

13151946427 is a deficient number, since it is larger than the sum of its proper divisors (47480229).

13151946427 is an equidigital number, since it uses as much as digits as its factorization.

13151946427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47480228.

The product of its digits is 181440, while the sum is 43.

The spelling of 13151946427 in words is "thirteen billion, one hundred fifty-one million, nine hundred forty-six thousand, four hundred twenty-seven".