201653441604 has 36 divisors (see below), whose sum is σ = 510025035520. Its totient is φ = 67179579120.

The previous prime is 201653441593. The next prime is 201653441611. The reversal of 201653441604 is 406144356102.

201653441604 is a `hidden beast` number, since 2 + 0 + 1 + 6 + 5 + 3 + 4 + 41 + 604 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×201653441604² (a number of 23 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1528912 + ... + 1655559.

Almost surely, 2^201653441604 is an apocalyptic number.

It is an amenable number.

201653441604 is an abundant number, since it is smaller than the sum of its proper divisors (308371593916).

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

201653441604 is a wasteful number, since it uses less digits than its factorization.

201653441604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3186240 (or 3186235 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 201653441604 its reverse (406144356102), we get a palindrome (607797797706).

The spelling of 201653441604 in words is "two hundred one billion, six hundred fifty-three million, four hundred forty-one thousand, six hundred four".