450221853618 has 24 divisors (see below), whose sum is σ = 975504112128. Its totient is φ = 150070346712.

The previous prime is 450221853607. The next prime is 450221853649. The reversal of 450221853618 is 816358122054.

450221853618 is a `hidden beast` number, since 4 + 5 + 0 + 2 + 21 + 8 + 5 + 3 + 618 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 532255 + ... + 1087997.

It is an arithmetic number, because the mean of its divisors is an integer number (40646004672).

Almost surely, 2^450221853618 is an apocalyptic number.

450221853618 is an abundant number, since it is smaller than the sum of its proper divisors (525282258510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

450221853618 is a wasteful number, since it uses less digits than its factorization.

450221853618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600758 (or 600755 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The spelling of 450221853618 in words is "four hundred fifty billion, two hundred twenty-one million, eight hundred fifty-three thousand, six hundred eighteen".