201545120533254 has 32 divisors (see below), whose sum is σ = 423213634494720. Its totient is φ = 63896960494752.

The previous prime is 201545120533241. The next prime is 201545120533261. The reversal of 201545120533254 is 452335021545102.

It is a super-2 number, since 2×201545120533254² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8644057674 + ... + 8644080989.

It is an arithmetic number, because the mean of its divisors is an integer number (13225426077960).

Almost surely, 2^{201545120533254} is an apocalyptic number.

201545120533254 is an abundant number, since it is smaller than the sum of its proper divisors (221668513961466).

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

201545120533254 is a wasteful number, since it uses less digits than its factorization.

201545120533254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17288138764.

The product of its (nonzero) digits is 720000, while the sum is 42.

The spelling of 201545120533254 in words is "two hundred one trillion, five hundred forty-five billion, one hundred twenty million, five hundred thirty-three thousand, two hundred fifty-four".