15243321453 has 4 divisors (see below), whose sum is σ = 20324428608. Its totient is φ = 10162214300.

The previous prime is 15243321449. The next prime is 15243321469. The reversal of 15243321453 is 35412334251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15243321453 - 2² = 15243321449 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15243321413) 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, 2540553573 + ... + 2540553578.

It is an arithmetic number, because the mean of its divisors is an integer number (5081107152).

Almost surely, 2^15243321453 is an apocalyptic number.

It is an amenable number.

15243321453 is a deficient number, since it is larger than the sum of its proper divisors (5081107155).

15243321453 is an equidigital number, since it uses as much as digits as its factorization.

15243321453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5081107154.

The product of its digits is 43200, while the sum is 33.

The spelling of 15243321453 in words is "fifteen billion, two hundred forty-three million, three hundred twenty-one thousand, four hundred fifty-three".