452640565543 has 4 divisors (see below), whose sum is σ = 459015784848. Its totient is φ = 446265346240.

The previous prime is 452640565541. The next prime is 452640565549. The reversal of 452640565543 is 345565046254.

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

It is a cyclic number.

It is not a de Polignac number, because 452640565543 - 2¹ = 452640565541 is a prime.

It is a super-3 number, since 3×452640565543³ (a number of 36 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (452640565541) 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, 3187609546 + ... + 3187609687.

It is an arithmetic number, because the mean of its divisors is an integer number (114753946212).

Almost surely, 2^452640565543 is an apocalyptic number.

452640565543 is a deficient number, since it is larger than the sum of its proper divisors (6375219305).

452640565543 is an equidigital number, since it uses as much as digits as its factorization.

452640565543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6375219304.

The product of its (nonzero) digits is 8640000, while the sum is 49.

The spelling of 452640565543 in words is "four hundred fifty-two billion, six hundred forty million, five hundred sixty-five thousand, five hundred forty-three".