20893161744 has 360 divisors, whose sum is σ = 73866998400. Its totient is φ = 5508082944.

The previous prime is 20893161727. The next prime is 20893161763. The reversal of 20893161744 is 44716139802.

20893161744 is a `hidden beast` number, since 20 + 8 + 9 + 3 + 1 + 617 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20893161744.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8345997 + ... + 8348499.

Almost surely, 2^20893161744 is an apocalyptic number.

20893161744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20893161744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36933499200).

20893161744 is an abundant number, since it is smaller than the sum of its proper divisors (52973836656).

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

20893161744 is a wasteful number, since it uses less digits than its factorization.

20893161744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564 (or 2528 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 20893161744 in words is "twenty billion, eight hundred ninety-three million, one hundred sixty-one thousand, seven hundred forty-four".