20641206246 has 16 divisors (see below), whose sum is σ = 41647744944. Its totient is φ = 6819513344.

The previous prime is 20641206203. The next prime is 20641206259. The reversal of 20641206246 is 64260214602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15221451 + ... + 15222806.

It is an arithmetic number, because the mean of its divisors is an integer number (2602984059).

Almost surely, 2^20641206246 is an apocalyptic number.

20641206246 is an abundant number, since it is smaller than the sum of its proper divisors (21006538698).

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

20641206246 is a wasteful number, since it uses less digits than its factorization.

20641206246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30444375.

The product of its (nonzero) digits is 27648, while the sum is 33.

The spelling of 20641206246 in words is "twenty billion, six hundred forty-one million, two hundred six thousand, two hundred forty-six".