20344156666023 has 16 divisors (see below), whose sum is σ = 27395081220096. Its totient is φ = 13428011114400.

The previous prime is 20344156666019. The next prime is 20344156666117. The reversal of 20344156666023 is 32066665144302.

It is not a de Polignac number, because 20344156666023 - 2² = 20344156666019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344156666723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7494390 + ... + 9841452.

It is an arithmetic number, because the mean of its divisors is an integer number (1712192576256).

Almost surely, 2^{20344156666023} is an apocalyptic number.

20344156666023 is a deficient number, since it is larger than the sum of its proper divisors (7050924554073).

20344156666023 is a wasteful number, since it uses less digits than its factorization.

20344156666023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375774.

The product of its (nonzero) digits is 3732480, while the sum is 48.

The spelling of 20344156666023 in words is "twenty trillion, three hundred forty-four billion, one hundred fifty-six million, six hundred sixty-six thousand, twenty-three".