20530011744 has 144 divisors (see below), whose sum is σ = 63751955904. Its totient is φ = 6215136000.

The previous prime is 20530011707. The next prime is 20530011787. The reversal of 20530011744 is 44711003502.

20530011744 is a `hidden beast` number, since 205 + 300 + 117 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4062019 + ... + 4067069.

It is an arithmetic number, because the mean of its divisors is an integer number (442721916).

Almost surely, 2^20530011744 is an apocalyptic number.

20530011744 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 20530011744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31875977952).

20530011744 is an abundant number, since it is smaller than the sum of its proper divisors (43221944160).

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

20530011744 is a wasteful number, since it uses less digits than its factorization.

20530011744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6361 (or 6350 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The spelling of 20530011744 in words is "twenty billion, five hundred thirty million, eleven thousand, seven hundred forty-four".