20706727715707 has 4 divisors (see below), whose sum is σ = 22589157508056. Its totient is φ = 18824297923360.

The previous prime is 20706727715693. The next prime is 20706727715761. The reversal of 20706727715707 is 70751772760702.

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 20706727715707 - 2¹⁹ = 20706727191419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20706727115707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 941214896158 + ... + 941214896179.

It is an arithmetic number, because the mean of its divisors is an integer number (5647289377014).

Almost surely, 2^{20706727715707} is an apocalyptic number.

20706727715707 is a deficient number, since it is larger than the sum of its proper divisors (1882429792349).

20706727715707 is a wasteful number, since it uses less digits than its factorization.

20706727715707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882429792348.

The product of its (nonzero) digits is 14117880, while the sum is 58.

The spelling of 20706727715707 in words is "twenty trillion, seven hundred six billion, seven hundred twenty-seven million, seven hundred fifteen thousand, seven hundred seven".