20334188821 has 8 divisors (see below), whose sum is σ = 20497618944. Its totient is φ = 20170810800.

The previous prime is 20334188789. The next prime is 20334188837. The reversal of 20334188821 is 12888143302.

It is a happy number.

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 20334188821 - 2⁵ = 20334188789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20334188851) 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, 1281291 + ... + 1297063.

It is an arithmetic number, because the mean of its divisors is an integer number (2562202368).

Almost surely, 2^20334188821 is an apocalyptic number.

It is an amenable number.

20334188821 is a deficient number, since it is larger than the sum of its proper divisors (163430123).

20334188821 is a wasteful number, since it uses less digits than its factorization.

20334188821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26051.

The product of its (nonzero) digits is 73728, while the sum is 40.

The spelling of 20334188821 in words is "twenty billion, three hundred thirty-four million, one hundred eighty-eight thousand, eight hundred twenty-one".