20206755707 has 4 divisors (see below), whose sum is σ = 20226704160. Its totient is φ = 20186807256.

The previous prime is 20206755661. The next prime is 20206755733. The reversal of 20206755707 is 70755760202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20206755707 - 2¹⁰ = 20206754683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20206755757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9972707 + ... + 9974732.

It is an arithmetic number, because the mean of its divisors is an integer number (5056676040).

Almost surely, 2^20206755707 is an apocalyptic number.

20206755707 is a deficient number, since it is larger than the sum of its proper divisors (19948453).

20206755707 is a wasteful number, since it uses less digits than its factorization.

20206755707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19948452.

The product of its (nonzero) digits is 205800, while the sum is 41.

The spelling of 20206755707 in words is "twenty billion, two hundred six million, seven hundred fifty-five thousand, seven hundred seven".