20883816560144 has 40 divisors (see below), whose sum is σ = 40772453217408. Its totient is φ = 10361897786240.

The previous prime is 20883816560141. The next prime is 20883816560153. The reversal of 20883816560144 is 44106561838802.

It is a super-2 number, since 2×20883816560144² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20883816560144.

It is not an unprimeable number, because it can be changed into a prime (20883816560141) 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, 83478254 + ... + 83728050.

Almost surely, 2^{20883816560144} is an apocalyptic number.

It is an amenable number.

20883816560144 is a deficient number, since it is larger than the sum of its proper divisors (19888636657264).

20883816560144 is a wasteful number, since it uses less digits than its factorization.

20883816560144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289823 (or 289817 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 56.

The spelling of 20883816560144 in words is "twenty trillion, eight hundred eighty-three billion, eight hundred sixteen million, five hundred sixty thousand, one hundred forty-four".