20894895133 has 8 divisors (see below), whose sum is σ = 23899906368. Its totient is φ = 17894890464.

The previous prime is 20894895121. The next prime is 20894895179. The reversal of 20894895133 is 33159849802.

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 20894895133 - 2²⁵ = 20861340701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20894895113) 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, 1242691 + ... + 1259392.

It is an arithmetic number, because the mean of its divisors is an integer number (2987488296).

Almost surely, 2^20894895133 is an apocalyptic number.

It is an amenable number.

20894895133 is a deficient number, since it is larger than the sum of its proper divisors (3005011235).

20894895133 is a wasteful number, since it uses less digits than its factorization.

20894895133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503283.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 20894895133 in words is "twenty billion, eight hundred ninety-four million, eight hundred ninety-five thousand, one hundred thirty-three".