20113873344 has 280 divisors, whose sum is σ = 62880288768. Its totient is φ = 6347911680.

The previous prime is 20113873277. The next prime is 20113873379. The reversal of 20113873344 is 44337831102.

20113873344 is a `hidden beast` number, since 201 + 1 + 387 + 33 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 20113873299 and 20113873308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7551757 + ... + 7554419.

Almost surely, 2^20113873344 is an apocalyptic number.

20113873344 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 20113873344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31440144384).

20113873344 is an abundant number, since it is smaller than the sum of its proper divisors (42766415424).

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

20113873344 is a wasteful number, since it uses less digits than its factorization.

20113873344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765 (or 2746 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 20113873344 in words is "twenty billion, one hundred thirteen million, eight hundred seventy-three thousand, three hundred forty-four".