20721342263300 has 36 divisors (see below), whose sum is σ = 51388928814720. Its totient is φ = 7104460204320.

The previous prime is 20721342263299. The next prime is 20721342263317. The reversal of 20721342263300 is 336224312702.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14800958060 + ... + 14800959459.

Almost surely, 2^{20721342263300} is an apocalyptic number.

20721342263300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20721342263300 is an abundant number, since it is smaller than the sum of its proper divisors (30667586551420).

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

20721342263300 is a wasteful number, since it uses less digits than its factorization.

20721342263300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29601917540 (or 29601917533 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 35.

The spelling of 20721342263300 in words is "twenty trillion, seven hundred twenty-one billion, three hundred forty-two million, two hundred sixty-three thousand, three hundred".