21881363603 has 8 divisors (see below), whose sum is σ = 24425708736. Its totient is φ = 19429540200.

The previous prime is 21881363593. The next prime is 21881363627. The reversal of 21881363603 is 30636318812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21881363603 - 2¹⁰ = 21881362579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21881363303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23129933 + ... + 23130878.

It is an arithmetic number, because the mean of its divisors is an integer number (3053213592).

Almost surely, 2^21881363603 is an apocalyptic number.

21881363603 is a deficient number, since it is larger than the sum of its proper divisors (2544345133).

21881363603 is a wasteful number, since it uses less digits than its factorization.

21881363603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46260865.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 21881363603 in words is "twenty-one billion, eight hundred eighty-one million, three hundred sixty-three thousand, six hundred three".