21412373450 has 48 divisors (see below), whose sum is σ = 43020642336. Its totient is φ = 7882142400.

The previous prime is 21412373441. The next prime is 21412373459. The reversal of 21412373450 is 5437321412.

It is an interprime number because it is at equal distance from previous prime (21412373441) and next prime (21412373459).

It is not an unprimeable number, because it can be changed into a prime (21412373459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165389 + ... + 264911.

It is an arithmetic number, because the mean of its divisors is an integer number (896263382).

Almost surely, 2^21412373450 is an apocalyptic number.

21412373450 is an abundant number, since it is smaller than the sum of its proper divisors (21608268886).

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

21412373450 is a wasteful number, since it uses less digits than its factorization.

21412373450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99879 (or 99874 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

Adding to 21412373450 its reverse (5437321412), we get a palindrome (26849694862).

The spelling of 21412373450 in words is "twenty-one billion, four hundred twelve million, three hundred seventy-three thousand, four hundred fifty".