20127122457067 has 4 divisors (see below), whose sum is σ = 20136359321320. Its totient is φ = 20117885592816.

The previous prime is 20127122457041. The next prime is 20127122457097. The reversal of 20127122457067 is 76075422172102.

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 20127122457067 - 2²³ = 20127114068459 is a prime.

It is a super-3 number, since 3×20127122457067³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20127122457097) 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, 4618428858 + ... + 4618433215.

It is an arithmetic number, because the mean of its divisors is an integer number (5034089830330).

Almost surely, 2^{20127122457067} is an apocalyptic number.

20127122457067 is a deficient number, since it is larger than the sum of its proper divisors (9236864253).

20127122457067 is an equidigital number, since it uses as much as digits as its factorization.

20127122457067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9236864252.

The product of its (nonzero) digits is 658560, while the sum is 46.

The spelling of 20127122457067 in words is "twenty trillion, one hundred twenty-seven billion, one hundred twenty-two million, four hundred fifty-seven thousand, sixty-seven".