205104050240 has 56 divisors (see below), whose sum is σ = 495283004352. Its totient is φ = 80886095360.

The previous prime is 205104050237. The next prime is 205104050303. The reversal of 205104050240 is 42050401502.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4491014 + ... + 4536453.

Almost surely, 2^205104050240 is an apocalyptic number.

205104050240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205104050240 is an abundant number, since it is smaller than the sum of its proper divisors (290178954112).

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

205104050240 is an equidigital number, since it uses as much as digits as its factorization.

205104050240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9027555 (or 9027545 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 205104050240 its reverse (42050401502), we get a palindrome (247154451742).

The spelling of 205104050240 in words is "two hundred five billion, one hundred four million, fifty thousand, two hundred forty".