20331621403 has 8 divisors (see below), whose sum is σ = 21426696720. Its totient is φ = 19239045120.

The previous prime is 20331621313. The next prime is 20331621407. The reversal of 20331621403 is 30412613302.

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 20331621403 - 2¹⁷ = 20331490331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20331621407) 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, 608038 + ... + 640603.

It is an arithmetic number, because the mean of its divisors is an integer number (2678337090).

Almost surely, 2^20331621403 is an apocalyptic number.

20331621403 is a deficient number, since it is larger than the sum of its proper divisors (1095075317).

20331621403 is a wasteful number, since it uses less digits than its factorization.

20331621403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249517.

The product of its (nonzero) digits is 2592, while the sum is 25.

The spelling of 20331621403 in words is "twenty billion, three hundred thirty-one million, six hundred twenty-one thousand, four hundred three".