15449265451 has 4 divisors (see below), whose sum is σ = 15456483504. Its totient is φ = 15442047400.

The previous prime is 15449265421. The next prime is 15449265499. The reversal of 15449265451 is 15456294451.

15449265451 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, and also an emirpimes, since its reverse is a distinct semiprime: 15456294451 = 13 ⋅1188945727.

It is a cyclic number.

It is not a de Polignac number, because 15449265451 - 2⁹ = 15449264939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15449265421) 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, 3605815 + ... + 3610096.

It is an arithmetic number, because the mean of its divisors is an integer number (3864120876).

Almost surely, 2^15449265451 is an apocalyptic number.

15449265451 is a deficient number, since it is larger than the sum of its proper divisors (7218053).

15449265451 is an equidigital number, since it uses as much as digits as its factorization.

15449265451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7218052.

The product of its digits is 864000, while the sum is 46.

It can be divided in two parts, 15449 and 265451, that added together give a square (280900 = 530²).

The spelling of 15449265451 in words is "fifteen billion, four hundred forty-nine million, two hundred sixty-five thousand, four hundred fifty-one".