20894249802 has 16 divisors (see below), whose sum is σ = 43987894560. Its totient is φ = 6598184112.

The previous prime is 20894249801. The next prime is 20894249819.

20894249802 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (20894249801) 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 7 ways as a sum of consecutive naturals, for example, 91641333 + ... + 91641560.

It is an arithmetic number, because the mean of its divisors is an integer number (2749243410).

Almost surely, 2^20894249802 is an apocalyptic number.

20894249802 is an abundant number, since it is smaller than the sum of its proper divisors (23093644758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20894249802 is a wasteful number, since it uses less digits than its factorization.

20894249802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183282917.

The product of its (nonzero) digits is 663552, while the sum is 48.

The spelling of 20894249802 in words is "twenty billion, eight hundred ninety-four million, two hundred forty-nine thousand, eight hundred two".