20330268091 has 16 divisors (see below), whose sum is σ = 24615714240. Its totient is φ = 16391301120.

The previous prime is 20330268061. The next prime is 20330268097. The reversal of 20330268091 is 19086203302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20330268091 - 2⁹ = 20330267579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20330268097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158115 + ... + 256243.

It is an arithmetic number, because the mean of its divisors is an integer number (1538482140).

Almost surely, 2^20330268091 is an apocalyptic number.

20330268091 is a deficient number, since it is larger than the sum of its proper divisors (4285446149).

20330268091 is a wasteful number, since it uses less digits than its factorization.

20330268091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99894.

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 20330268091 in words is "twenty billion, three hundred thirty million, two hundred sixty-eight thousand, ninety-one".