20333346901891 has 4 divisors (see below), whose sum is σ = 21529426131432. Its totient is φ = 19137267672352.

The previous prime is 20333346901871. The next prime is 20333346901897. The reversal of 20333346901891 is 19810964333302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20333346901891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20333346901897) 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, 598039614745 + ... + 598039614778.

It is an arithmetic number, because the mean of its divisors is an integer number (5382356532858).

Almost surely, 2^{20333346901891} is an apocalyptic number.

20333346901891 is a deficient number, since it is larger than the sum of its proper divisors (1196079229541).

20333346901891 is a wasteful number, since it uses less digits than its factorization.

20333346901891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196079229540.

The product of its (nonzero) digits is 2519424, while the sum is 52.

The spelling of 20333346901891 in words is "twenty trillion, three hundred thirty-three billion, three hundred forty-six million, nine hundred one thousand, eight hundred ninety-one".