21819663836332 has 6 divisors (see below), whose sum is σ = 38184411713588. Its totient is φ = 10909831918164.

The previous prime is 21819663836309. The next prime is 21819663836339. The reversal of 21819663836332 is 23363836691812.

It is not an unprimeable number, because it can be changed into a prime (21819663836339) by changing a digit.

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 as a sum of consecutive naturals, namely, 2727457979538 + ... + 2727457979545.

Almost surely, 2^{21819663836332} is an apocalyptic number.

It is an amenable number.

21819663836332 is a deficient number, since it is larger than the sum of its proper divisors (16364747877256).

21819663836332 is a wasteful number, since it uses less digits than its factorization.

21819663836332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5454915959087 (or 5454915959085 counting only the distinct ones).

The product of its digits is 40310784, while the sum is 61.

The spelling of 21819663836332 in words is "twenty-one trillion, eight hundred nineteen billion, six hundred sixty-three million, eight hundred thirty-six thousand, three hundred thirty-two".