20520266760099 has 24 divisors (see below), whose sum is σ = 30492297607200. Its totient is φ = 13288222067328.

The previous prime is 20520266760029. The next prime is 20520266760181. The reversal of 20520266760099 is 99006766202502.

It is a happy number.

20520266760099 is a `hidden beast` number, since 2 + 0 + 5 + 2 + 0 + 26 + 6 + 7 + 600 + 9 + 9 = 666.

It is not a de Polignac number, because 20520266760099 - 2¹⁹ = 20520266235811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20520266760029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51238282 + ... + 51637215.

It is an arithmetic number, because the mean of its divisors is an integer number (1270512400300).

Almost surely, 2^{20520266760099} is an apocalyptic number.

20520266760099 is a deficient number, since it is larger than the sum of its proper divisors (9972030847101).

20520266760099 is a wasteful number, since it uses less digits than its factorization.

20520266760099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102876139 (or 102876136 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The spelling of 20520266760099 in words is "twenty trillion, five hundred twenty billion, two hundred sixty-six million, seven hundred sixty thousand, ninety-nine".