450838172420 has 24 divisors (see below), whose sum is σ = 955138575384. Its totient is φ = 178739380736.

The previous prime is 450838172419. The next prime is 450838172431. The reversal of 450838172420 is 24271838054.

It can be written as a sum of positive squares in 4 ways, for example, as 4550042116 + 446288130304 = 67454^2 + 668048^2 .

It is a super-2 number, since 2×450838172420² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99740699 + ... + 99745218.

It is an arithmetic number, because the mean of its divisors is an integer number (39797440641).

Almost surely, 2^450838172420 is an apocalyptic number.

It is an amenable number.

450838172420 is an abundant number, since it is smaller than the sum of its proper divisors (504300402964).

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

450838172420 is a wasteful number, since it uses less digits than its factorization.

450838172420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199486039 (or 199486037 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 44.

The spelling of 450838172420 in words is "four hundred fifty billion, eight hundred thirty-eight million, one hundred seventy-two thousand, four hundred twenty".