20127122456723 has 8 divisors (see below), whose sum is σ = 20776464840576. Its totient is φ = 19477785096000.

The previous prime is 20127122456713. The next prime is 20127122456731. The reversal of 20127122456723 is 32765422172102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20127122456723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20127122456713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7961165 + ... + 10180097.

It is an arithmetic number, because the mean of its divisors is an integer number (2597058105072).

Almost surely, 2^{20127122456723} is an apocalyptic number.

20127122456723 is a deficient number, since it is larger than the sum of its proper divisors (649342383853).

20127122456723 is a wasteful number, since it uses less digits than its factorization.

20127122456723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511565.

The product of its (nonzero) digits is 564480, while the sum is 44.

The spelling of 20127122456723 in words is "twenty trillion, one hundred twenty-seven billion, one hundred twenty-two million, four hundred fifty-six thousand, seven hundred twenty-three".