20362643621 has 8 divisors (see below), whose sum is σ = 20520259200. Its totient is φ = 20205187200.

The previous prime is 20362643597. The next prime is 20362643629. The reversal of 20362643621 is 12634626302.

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 20362643621 - 2³⁴ = 3182774437 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 (20362643629) 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, 223796 + ... + 301346.

It is an arithmetic number, because the mean of its divisors is an integer number (2565032400).

Almost surely, 2^20362643621 is an apocalyptic number.

It is an amenable number.

20362643621 is a deficient number, since it is larger than the sum of its proper divisors (157615579).

20362643621 is a wasteful number, since it uses less digits than its factorization.

20362643621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79579.

The product of its (nonzero) digits is 62208, while the sum is 35.

The spelling of 20362643621 in words is "twenty billion, three hundred sixty-two million, six hundred forty-three thousand, six hundred twenty-one".