20127122456724 has 36 divisors (see below), whose sum is σ = 50877890009856. Its totient is φ = 6708909328848.

The previous prime is 20127122456713. The next prime is 20127122456731. The reversal of 20127122456724 is 42765422172102.

20127122456724 is a `hidden beast` number, since 2 + 0 + 1 + 2 + 7 + 122 + 456 + 72 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20127122456724.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3607654 + ... + 7298589.

It is an arithmetic number, because the mean of its divisors is an integer number (1413274722496).

Almost surely, 2^{20127122456724} is an apocalyptic number.

It is an amenable number.

20127122456724 is an abundant number, since it is smaller than the sum of its proper divisors (30750767553132).

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

20127122456724 is a wasteful number, since it uses less digits than its factorization.

20127122456724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10957516 (or 10957511 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The spelling of 20127122456724 in words is "twenty trillion, one hundred twenty-seven billion, one hundred twenty-two million, four hundred fifty-six thousand, seven hundred twenty-four".