21743247574453 has 4 divisors (see below), whose sum is σ = 22887629025760. Its totient is φ = 20598866123148.

The previous prime is 21743247574441. The next prime is 21743247574459. The reversal of 21743247574453 is 35447574234712.

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 21743247574453 - 2²¹ = 21743245477301 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 (21743247574459) 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, 572190725625 + ... + 572190725662.

It is an arithmetic number, because the mean of its divisors is an integer number (5721907256440).

Almost surely, 2^{21743247574453} is an apocalyptic number.

It is an amenable number.

21743247574453 is a deficient number, since it is larger than the sum of its proper divisors (1144381451307).

21743247574453 is a wasteful number, since it uses less digits than its factorization.

21743247574453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144381451306.

The product of its digits is 79027200, while the sum is 58.

The spelling of 21743247574453 in words is "twenty-one trillion, seven hundred forty-three billion, two hundred forty-seven million, five hundred seventy-four thousand, four hundred fifty-three".