645233525332546 has 8 divisors (see below), whose sum is σ = 967870815623100. Its totient is φ = 322609920124848.

The previous prime is 645233525332511. The next prime is 645233525332549.

645233525332546 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 418564993417321 + 226668531915225 = 20458861^2 + 15055515^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (645233525332549) 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, 3421152841 + ... + 3421341436.

Almost surely, 2^{645233525332546} is an apocalyptic number.

645233525332546 is a deficient number, since it is larger than the sum of its proper divisors (322637290290554).

645233525332546 is a wasteful number, since it uses less digits than its factorization.

645233525332546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6842541428.

The product of its digits is 233280000, while the sum is 58.

The spelling of 645233525332546 in words is "six hundred forty-five trillion, two hundred thirty-three billion, five hundred twenty-five million, three hundred thirty-two thousand, five hundred forty-six".