201264533634 has 16 divisors (see below), whose sum is σ = 404551828800. Its totient is φ = 66751050960.

The previous prime is 201264533633. The next prime is 201264533653. The reversal of 201264533634 is 436335462102.

It is a junction number, because it is equal to n+sod(n) for n = 201264533592 and 201264533601.

It is not an unprimeable number, because it can be changed into a prime (201264533633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84280437 + ... + 84282824.

It is an arithmetic number, because the mean of its divisors is an integer number (25284489300).

Almost surely, 2^201264533634 is an apocalyptic number.

201264533634 is an abundant number, since it is smaller than the sum of its proper divisors (203287295166).

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

201264533634 is a wasteful number, since it uses less digits than its factorization.

201264533634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168563465.

The product of its (nonzero) digits is 311040, while the sum is 39.

Adding to 201264533634 its reverse (436335462102), we get a palindrome (637599995736).

The spelling of 201264533634 in words is "two hundred one billion, two hundred sixty-four million, five hundred thirty-three thousand, six hundred thirty-four".