201105355405 has 16 divisors (see below), whose sum is σ = 245481346224. Its totient is φ = 158118612480.

The previous prime is 201105355397. The next prime is 201105355427. The reversal of 201105355405 is 504553501102.

It can be written as a sum of positive squares in 8 ways, for example, as 54824349316 + 146281006089 = 234146^2 + 382467^2 .

It is not a de Polignac number, because 201105355405 - 2³ = 201105355397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110769 + ... + 643801.

It is an arithmetic number, because the mean of its divisors is an integer number (15342584139).

Almost surely, 2^201105355405 is an apocalyptic number.

It is an amenable number.

201105355405 is a deficient number, since it is larger than the sum of its proper divisors (44375990819).

201105355405 is a wasteful number, since it uses less digits than its factorization.

201105355405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534336.

The product of its (nonzero) digits is 15000, while the sum is 31.

Adding to 201105355405 its reverse (504553501102), we get a palindrome (705658856507).

The spelling of 201105355405 in words is "two hundred one billion, one hundred five million, three hundred fifty-five thousand, four hundred five".