15716789453 has 4 divisors (see below), whose sum is σ = 16258747740. Its totient is φ = 15174831168.

The previous prime is 15716789411. The next prime is 15716789497. The reversal of 15716789453 is 35498761751.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35498761751 = 10007 ⋅3547393.

It can be written as a sum of positive squares in 2 ways, for example, as 10163260969 + 5553528484 = 100813^2 + 74522^2 .

It is a cyclic number.

It is not a de Polignac number, because 15716789453 - 2⁸ = 15716789197 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 (15716788453) 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, 270979100 + ... + 270979157.

It is an arithmetic number, because the mean of its divisors is an integer number (4064686935).

Almost surely, 2^15716789453 is an apocalyptic number.

It is an amenable number.

15716789453 is a deficient number, since it is larger than the sum of its proper divisors (541958287).

15716789453 is an equidigital number, since it uses as much as digits as its factorization.

15716789453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541958286.

The product of its digits is 6350400, while the sum is 56.

The spelling of 15716789453 in words is "fifteen billion, seven hundred sixteen million, seven hundred eighty-nine thousand, four hundred fifty-three".