205115040132 has 96 divisors (see below), whose sum is σ = 533812809600. Its totient is φ = 60918792192.

The previous prime is 205115040059. The next prime is 205115040199. The reversal of 205115040132 is 231040511502.

It is a happy 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, 5535844 + ... + 5572772.

It is an arithmetic number, because the mean of its divisors is an integer number (5560550100).

Almost surely, 2^205115040132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205115040132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266906404800).

205115040132 is an abundant number, since it is smaller than the sum of its proper divisors (328697769468).

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

205115040132 is a wasteful number, since it uses less digits than its factorization.

205115040132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38405 (or 38403 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 205115040132 its reverse (231040511502), we get a palindrome (436155551634).

The spelling of 205115040132 in words is "two hundred five billion, one hundred fifteen million, forty thousand, one hundred thirty-two".