445405305253 has 4 divisors (see below), whose sum is σ = 468847689760. Its totient is φ = 421962920748.

The previous prime is 445405305229. The next prime is 445405305277. The reversal of 445405305253 is 352503504544.

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 an interprime number because it is at equal distance from previous prime (445405305229) and next prime (445405305277).

It is a cyclic number.

It is not a de Polignac number, because 445405305253 - 2²¹ = 445403208101 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 (445405305283) 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, 11721192225 + ... + 11721192262.

It is an arithmetic number, because the mean of its divisors is an integer number (117211922440).

Almost surely, 2^445405305253 is an apocalyptic number.

It is an amenable number.

445405305253 is a deficient number, since it is larger than the sum of its proper divisors (23442384507).

445405305253 is a wasteful number, since it uses less digits than its factorization.

445405305253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23442384506.

The product of its (nonzero) digits is 720000, while the sum is 40.

Adding to 445405305253 its reverse (352503504544), we get a palindrome (797908809797).

The spelling of 445405305253 in words is "four hundred forty-five billion, four hundred five million, three hundred five thousand, two hundred fifty-three".