20110388256 has 288 divisors, whose sum is σ = 68733100800. Its totient is φ = 5455779840.

The previous prime is 20110388237. The next prime is 20110388299. The reversal of 20110388256 is 65288301102.

It is a happy number.

20110388256 is a `hidden beast` number, since 20 + 1 + 1 + 0 + 388 + 256 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

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

It is a self number, because there is not a number n which added to its sum of digits gives 20110388256.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3563485 + ... + 3569123.

It is an arithmetic number, because the mean of its divisors is an integer number (238656600).

Almost surely, 2^20110388256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20110388256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34366550400).

20110388256 is an abundant number, since it is smaller than the sum of its proper divisors (48622712544).

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

20110388256 is a wasteful number, since it uses less digits than its factorization.

20110388256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5752 (or 5741 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

Adding to 20110388256 its reverse (65288301102), we get a palindrome (85398689358).

The spelling of 20110388256 in words is "twenty billion, one hundred ten million, three hundred eighty-eight thousand, two hundred fifty-six".