201645236055 has 32 divisors (see below), whose sum is σ = 323500262400. Its totient is φ = 107255230592.

The previous prime is 201645235969. The next prime is 201645236081. The reversal of 201645236055 is 550632546102.

It is a cyclic number.

It is not a de Polignac number, because 201645236055 - 2²¹ = 201643138903 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8583916 + ... + 8607374.

It is an arithmetic number, because the mean of its divisors is an integer number (10109383200).

Almost surely, 2^201645236055 is an apocalyptic number.

201645236055 is a deficient number, since it is larger than the sum of its proper divisors (121855026345).

201645236055 is a wasteful number, since it uses less digits than its factorization.

201645236055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24983.

The product of its (nonzero) digits is 216000, while the sum is 39.

The spelling of 201645236055 in words is "two hundred one billion, six hundred forty-five million, two hundred thirty-six thousand, fifty-five".