201644251053 has 24 divisors (see below), whose sum is σ = 312840335808. Its totient is φ = 115193606976.

The previous prime is 201644251031. The next prime is 201644251057. The reversal of 201644251053 is 350152446102.

It is not a de Polignac number, because 201644251053 - 2⁵ = 201644251021 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201644251057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 353200 + ... + 726662.

It is an arithmetic number, because the mean of its divisors is an integer number (13035013992).

Almost surely, 2^201644251053 is an apocalyptic number.

It is an amenable number.

201644251053 is a deficient number, since it is larger than the sum of its proper divisors (111196084755).

201644251053 is a wasteful number, since it uses less digits than its factorization.

201644251053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377153 (or 377146 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 201644251053 its reverse (350152446102), we get a palindrome (551796697155).

The spelling of 201644251053 in words is "two hundred one billion, six hundred forty-four million, two hundred fifty-one thousand, fifty-three".