20329864272 has 40 divisors (see below), whose sum is σ = 58354241280. Its totient is φ = 6776621280.

The previous prime is 20329864253. The next prime is 20329864301. The reversal of 20329864272 is 27246892302.

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, 23529504 + ... + 23530367.

It is an arithmetic number, because the mean of its divisors is an integer number (1458856032).

Almost surely, 2^20329864272 is an apocalyptic number.

It is an amenable number.

20329864272 is an abundant number, since it is smaller than the sum of its proper divisors (38024377008).

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

20329864272 is a wasteful number, since it uses less digits than its factorization.

20329864272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47059888 (or 47059876 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 20329864272 in words is "twenty billion, three hundred twenty-nine million, eight hundred sixty-four thousand, two hundred seventy-two".