20033662331 has 4 divisors (see below), whose sum is σ = 20904691152. Its totient is φ = 19162633512.

The previous prime is 20033662309. The next prime is 20033662379. The reversal of 20033662331 is 13326633002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13326633002 = 2 ⋅6663316501.

It is a cyclic number.

It is not a de Polignac number, because 20033662331 - 2²² = 20029468027 is a prime.

It is a super-2 number, since 2×20033662331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20033662294 and 20033662303.

It is not an unprimeable number, because it can be changed into a prime (20033662381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435514376 + ... + 435514421.

It is an arithmetic number, because the mean of its divisors is an integer number (5226172788).

Almost surely, 2^20033662331 is an apocalyptic number.

20033662331 is a deficient number, since it is larger than the sum of its proper divisors (871028821).

20033662331 is an equidigital number, since it uses as much as digits as its factorization.

20033662331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871028820.

The product of its (nonzero) digits is 11664, while the sum is 29.

The spelling of 20033662331 in words is "twenty billion, thirty-three million, six hundred sixty-two thousand, three hundred thirty-one".