20881190233 has 4 divisors (see below), whose sum is σ = 20882341120. Its totient is φ = 20880039348.

The previous prime is 20881190207. The next prime is 20881190249. The reversal of 20881190233 is 33209118802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20881190233 - 2¹³ = 20881182041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20881190192 and 20881190201.

It is not an unprimeable number, because it can be changed into a prime (20881193233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547785 + ... + 584662.

It is an arithmetic number, because the mean of its divisors is an integer number (5220585280).

Almost surely, 2^20881190233 is an apocalyptic number.

It is an amenable number.

20881190233 is a deficient number, since it is larger than the sum of its proper divisors (1150887).

20881190233 is a wasteful number, since it uses less digits than its factorization.

20881190233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150886.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 20881190233 in words is "twenty billion, eight hundred eighty-one million, one hundred ninety thousand, two hundred thirty-three".