20641794862 has 16 divisors (see below), whose sum is σ = 33541749360. Its totient is φ = 9526980216.

The previous prime is 20641794853. The next prime is 20641794869. The reversal of 20641794862 is 26849714602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20641794869) 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, 2344468 + ... + 2353255.

It is an arithmetic number, because the mean of its divisors is an integer number (2096359335).

Almost surely, 2^20641794862 is an apocalyptic number.

20641794862 is a deficient number, since it is larger than the sum of its proper divisors (12899954498).

20641794862 is an equidigital number, since it uses as much as digits as its factorization.

20641794862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4697764 (or 4697738 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 20641794862 in words is "twenty billion, six hundred forty-one million, seven hundred ninety-four thousand, eight hundred sixty-two".