20637044545227 has 16 divisors (see below), whose sum is σ = 30137111061120. Its totient is φ = 12457469840000.

The previous prime is 20637044545219. The next prime is 20637044545289. The reversal of 20637044545227 is 72254544073602.

It is a cyclic number.

It is not a de Polignac number, because 20637044545227 - 2³ = 20637044545219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20637044545227.

It is not an unprimeable number, because it can be changed into a prime (20637044545207) 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, 1245738702 + ... + 1245755267.

It is an arithmetic number, because the mean of its divisors is an integer number (1883569441320).

Almost surely, 2^{20637044545227} is an apocalyptic number.

20637044545227 is a deficient number, since it is larger than the sum of its proper divisors (9500066515893).

20637044545227 is a wasteful number, since it uses less digits than its factorization.

20637044545227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491494234.

The product of its (nonzero) digits is 11289600, while the sum is 51.

The spelling of 20637044545227 in words is "twenty trillion, six hundred thirty-seven billion, forty-four million, five hundred forty-five thousand, two hundred twenty-seven".