201653212056 has 32 divisors (see below), whose sum is σ = 509124452400. Its totient is φ = 66552214400.

The previous prime is 201653212051. The next prime is 201653212093. The reversal of 201653212056 is 650212356102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201653212051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41592711 + ... + 41597558.

Almost surely, 2^201653212056 is an apocalyptic number.

It is an amenable number.

201653212056 is an abundant number, since it is smaller than the sum of its proper divisors (307471240344).

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

201653212056 is a wasteful number, since it uses less digits than its factorization.

201653212056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83190379 (or 83190375 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 201653212056 its reverse (650212356102), we get a palindrome (851865568158).

The spelling of 201653212056 in words is "two hundred one billion, six hundred fifty-three million, two hundred twelve thousand, fifty-six".