20668353246 has 12 divisors (see below), whose sum is σ = 44781432072. Its totient is φ = 6889451076.

The previous prime is 20668353227. The next prime is 20668353269. The reversal of 20668353246 is 64235386602.

It is a happy number.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 574120906 + ... + 574120941.

It is an arithmetic number, because the mean of its divisors is an integer number (3731786006).

Almost surely, 2^20668353246 is an apocalyptic number.

20668353246 is an abundant number, since it is smaller than the sum of its proper divisors (24113078826).

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

20668353246 is a wasteful number, since it uses less digits than its factorization.

20668353246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148241855 (or 1148241852 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 20668353246 in words is "twenty billion, six hundred sixty-eight million, three hundred fifty-three thousand, two hundred forty-six".