20956023040027 has 4 divisors (see below), whose sum is σ = 20956051371520. Its totient is φ = 20955994708536.

The previous prime is 20956023039967. The next prime is 20956023040039. The reversal of 20956023040027 is 72004032065902.

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 20956023040027 - 2²³ = 20956014651419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20956023040427) 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, 13025652 + ... + 14545777.

It is an arithmetic number, because the mean of its divisors is an integer number (5239012842880).

Almost surely, 2^{20956023040027} is an apocalyptic number.

20956023040027 is a deficient number, since it is larger than the sum of its proper divisors (28331493).

20956023040027 is an equidigital number, since it uses as much as digits as its factorization.

20956023040027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28331492.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 20956023040027 in words is "twenty trillion, nine hundred fifty-six billion, twenty-three million, forty thousand, twenty-seven".