15445252453 has 4 divisors (see below), whose sum is σ = 15557991660. Its totient is φ = 15332513248.

The previous prime is 15445252423. The next prime is 15445252523. The reversal of 15445252453 is 35425254451.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3269895489 + 12175356964 = 57183^2 + 110342^2 .

It is a cyclic number.

It is not a de Polignac number, because 15445252453 - 2²⁹ = 14908381541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15445252423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56369398 + ... + 56369671.

It is an arithmetic number, because the mean of its divisors is an integer number (3889497915).

Almost surely, 2^15445252453 is an apocalyptic number.

It is an amenable number.

15445252453 is a deficient number, since it is larger than the sum of its proper divisors (112739207).

15445252453 is a wasteful number, since it uses less digits than its factorization.

15445252453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112739206.

The product of its digits is 480000, while the sum is 40.

The spelling of 15445252453 in words is "fifteen billion, four hundred forty-five million, two hundred fifty-two thousand, four hundred fifty-three".