450643244455615 has 4 divisors (see below), whose sum is σ = 540771893346744. Its totient is φ = 360514595564488.

The previous prime is 450643244455589. The next prime is 450643244455631. The reversal of 450643244455615 is 516554442346054.

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 450643244455615 - 2²⁹ = 450642707584703 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 450643244455615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45064324445557 + ... + 45064324445566.

It is an arithmetic number, because the mean of its divisors is an integer number (135192973336686).

Almost surely, 2^{450643244455615} is an apocalyptic number.

450643244455615 is a deficient number, since it is larger than the sum of its proper divisors (90128648891129).

450643244455615 is an equidigital number, since it uses as much as digits as its factorization.

450643244455615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90128648891128.

The product of its (nonzero) digits is 138240000, while the sum is 58.

The spelling of 450643244455615 in words is "four hundred fifty trillion, six hundred forty-three billion, two hundred forty-four million, four hundred fifty-five thousand, six hundred fifteen".