20127122457066 has 96 divisors (see below), whose sum is σ = 45947695772160. Its totient is φ = 6355180339200.

The previous prime is 20127122457041. The next prime is 20127122457097. The reversal of 20127122457066 is 66075422172102.

20127122457066 is a `hidden beast` number, since 2 + 0 + 1 + 2 + 7 + 12 + 2 + 4 + 570 + 66 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17347306 + ... + 18471146.

It is an arithmetic number, because the mean of its divisors is an integer number (478621830960).

Almost surely, 2^{20127122457066} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20127122457066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22973847886080).

20127122457066 is an abundant number, since it is smaller than the sum of its proper divisors (25820573315094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20127122457066 is a wasteful number, since it uses less digits than its factorization.

20127122457066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124292 (or 1124289 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 20127122457066 in words is "twenty trillion, one hundred twenty-seven billion, one hundred twenty-two million, four hundred fifty-seven thousand, sixty-six".