20266540708320 has 288 divisors, whose sum is σ = 75964747622400. Its totient is φ = 4897360714752.

The previous prime is 20266540708307. The next prime is 20266540708373. The reversal of 20266540708320 is 2380704566202.

20266540708320 is a `hidden beast` number, since 2 + 0 + 2 + 6 + 6 + 540 + 7 + 0 + 83 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15473680 + ... + 16732239.

It is an arithmetic number, because the mean of its divisors is an integer number (263766484800).

Almost surely, 2^{20266540708320} is an apocalyptic number.

20266540708320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20266540708320 is an abundant number, since it is smaller than the sum of its proper divisors (55698206914080).

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

20266540708320 is a wasteful number, since it uses less digits than its factorization.

20266540708320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32205982 (or 32205971 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 20266540708320 in words is "twenty trillion, two hundred sixty-six billion, five hundred forty million, seven hundred eight thousand, three hundred twenty".