201056223564 has 144 divisors (see below), whose sum is σ = 594879667200. Its totient is φ = 57231709920.

The previous prime is 201056223553. The next prime is 201056223607. The reversal of 201056223564 is 465322650102.

201056223564 is a `hidden beast` number, since 2 + 0 + 1 + 0 + 562 + 2 + 35 + 64 = 666.

201056223564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3316267 + ... + 3376349.

It is an arithmetic number, because the mean of its divisors is an integer number (4131108800).

Almost surely, 2^201056223564 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 201056223564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297439833600).

201056223564 is an abundant number, since it is smaller than the sum of its proper divisors (393823443636).

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

201056223564 is a wasteful number, since it uses less digits than its factorization.

201056223564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60385 (or 60366 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 201056223564 its reverse (465322650102), we get a palindrome (666378873666).

The spelling of 201056223564 in words is "two hundred one billion, fifty-six million, two hundred twenty-three thousand, five hundred sixty-four".