200424521345 has 4 divisors (see below), whose sum is σ = 240509425620. Its totient is φ = 160339617072.

The previous prime is 200424521333. The next prime is 200424521347. The reversal of 200424521345 is 543125424002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 141072355216 + 59352166129 = 375596^2 + 243623^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200424521345 is a prime.

It is not an unprimeable number, because it can be changed into a prime (200424521347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20042452130 + ... + 20042452139.

It is an arithmetic number, because the mean of its divisors is an integer number (60127356405).

Almost surely, 2^200424521345 is an apocalyptic number.

It is an amenable number.

200424521345 is a deficient number, since it is larger than the sum of its proper divisors (40084904275).

200424521345 is an equidigital number, since it uses as much as digits as its factorization.

200424521345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40084904274.

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 200424521345 its reverse (543125424002), we get a palindrome (743549945347).

The spelling of 200424521345 in words is "two hundred billion, four hundred twenty-four million, five hundred twenty-one thousand, three hundred forty-five".