452078813581 has 4 divisors (see below), whose sum is σ = 464297159932. Its totient is φ = 439860467232.

The previous prime is 452078813509. The next prime is 452078813591. The reversal of 452078813581 is 185318870254.

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 236628738025 + 215450075556 = 486445^2 + 464166^2 .

It is a de Polignac number, because none of the positive numbers 2^k-452078813581 is a prime.

It is a super-2 number, since 2×452078813581² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (452078813591) 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, 6109173120 + ... + 6109173193.

It is an arithmetic number, because the mean of its divisors is an integer number (116074289983).

Almost surely, 2^452078813581 is an apocalyptic number.

It is an amenable number.

452078813581 is a deficient number, since it is larger than the sum of its proper divisors (12218346351).

452078813581 is a wasteful number, since it uses less digits than its factorization.

452078813581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12218346350.

The product of its (nonzero) digits is 2150400, while the sum is 52.

The spelling of 452078813581 in words is "four hundred fifty-two billion, seventy-eight million, eight hundred thirteen thousand, five hundred eighty-one".