450021493620 has 72 divisors (see below), whose sum is σ = 1368725093736. Its totient is φ = 119683982592.

The previous prime is 450021493601. The next prime is 450021493693. The reversal of 450021493620 is 26394120054.

It is a happy number.

450021493620 is a `hidden beast` number, since 4 + 5 + 0 + 0 + 21 + 4 + 9 + 3 + 620 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 73764387216 + 376257106404 = 271596^2 + 613398^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3284227 + ... + 3418506.

Almost surely, 2^450021493620 is an apocalyptic number.

It is an amenable number.

450021493620 is an abundant number, since it is smaller than the sum of its proper divisors (918703600116).

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

450021493620 is a wasteful number, since it uses less digits than its factorization.

450021493620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6703121 (or 6703116 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 450021493620 in words is "four hundred fifty billion, twenty-one million, four hundred ninety-three thousand, six hundred twenty".