21423589238250 has 48 divisors (see below), whose sum is σ = 57929385306312. Its totient is φ = 5712957129600.

The previous prime is 21423589238221. The next prime is 21423589238273. The reversal of 21423589238250 is 5283298532412.

It is a happy number.

21423589238250 is a `hidden beast` number, since 2 + 1 + 4 + 2 + 3 + 589 + 2 + 3 + 8 + 2 + 50 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1037849525001 + 20385739713249 = 1018749^2 + 4515057^2 .

It is a super-2 number, since 2×21423589238250² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4760795359 + ... + 4760799858.

Almost surely, 2^{21423589238250} is an apocalyptic number.

21423589238250 is an abundant number, since it is smaller than the sum of its proper divisors (36505796068062).

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

21423589238250 is a wasteful number, since it uses less digits than its factorization.

21423589238250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9521595240 (or 9521595227 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 54.

The spelling of 21423589238250 in words is "twenty-one trillion, four hundred twenty-three billion, five hundred eighty-nine million, two hundred thirty-eight thousand, two hundred fifty".