450290648820 has 96 divisors (see below), whose sum is σ = 1286053429248. Its totient is φ = 117696523392.

The previous prime is 450290648813. The next prime is 450290648839. The reversal of 450290648820 is 28846092054.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 450290648820.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 276477 + ... + 988443.

It is an arithmetic number, because the mean of its divisors is an integer number (13396389888).

Almost surely, 2^450290648820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 450290648820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (643026714624).

450290648820 is an abundant number, since it is smaller than the sum of its proper divisors (835762780428).

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

450290648820 is a wasteful number, since it uses less digits than its factorization.

450290648820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712189 (or 712187 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 48.

The spelling of 450290648820 in words is "four hundred fifty billion, two hundred ninety million, six hundred forty-eight thousand, eight hundred twenty".