21214036541632 has 28 divisors (see below), whose sum is σ = 45923567742216. Its totient is φ = 9642743882240.

The previous prime is 21214036541629. The next prime is 21214036541639. The reversal of 21214036541632 is 23614563041212.

It is not an unprimeable number, because it can be changed into a prime (21214036541639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15066786613 + ... + 15066788020.

Almost surely, 2^{21214036541632} is an apocalyptic number.

21214036541632 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21214036541632 is an abundant number, since it is smaller than the sum of its proper divisors (24709531200584).

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

21214036541632 is a wasteful number, since it uses less digits than its factorization.

21214036541632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30133574656 (or 30133574646 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

Adding to 21214036541632 its reverse (23614563041212), we get a palindrome (44828599582844).

The spelling of 21214036541632 in words is "twenty-one trillion, two hundred fourteen billion, thirty-six million, five hundred forty-one thousand, six hundred thirty-two".