13156625451 has 4 divisors (see below), whose sum is σ = 17542167272. Its totient is φ = 8771083632.

The previous prime is 13156625441. The next prime is 13156625453. The reversal of 13156625451 is 15452665131.

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

It is not a de Polignac number, because 13156625451 - 2⁶ = 13156625387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13156625453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2192770906 + ... + 2192770911.

It is an arithmetic number, because the mean of its divisors is an integer number (4385541818).

Almost surely, 2^13156625451 is an apocalyptic number.

13156625451 is a deficient number, since it is larger than the sum of its proper divisors (4385541821).

13156625451 is an equidigital number, since it uses as much as digits as its factorization.

13156625451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4385541820.

The product of its digits is 108000, while the sum is 39.

The spelling of 13156625451 in words is "thirteen billion, one hundred fifty-six million, six hundred twenty-five thousand, four hundred fifty-one".