201645790535 has 12 divisors (see below), whose sum is σ = 281481063048. Its totient is φ = 138271399056.

The previous prime is 201645790531. The next prime is 201645790553. The reversal of 201645790535 is 535097546102.

It is not a de Polignac number, because 201645790535 - 2² = 201645790531 is a prime.

It is a super-2 number, since 2×201645790535² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201645790535.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201645790531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 411521777 + ... + 411522266.

It is an arithmetic number, because the mean of its divisors is an integer number (23456755254).

Almost surely, 2^201645790535 is an apocalyptic number.

201645790535 is a deficient number, since it is larger than the sum of its proper divisors (79835272513).

201645790535 is an equidigital number, since it uses as much as digits as its factorization.

201645790535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823044062 (or 823044055 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 47.

The spelling of 201645790535 in words is "two hundred one billion, six hundred forty-five million, seven hundred ninety thousand, five hundred thirty-five".