643260063613234 has 8 divisors (see below), whose sum is σ = 990968206106988. Its totient is φ = 312937328244240.

The previous prime is 643260063613201. The next prime is 643260063613243. The reversal of 643260063613234 is 432316360062346.

It can be written as a sum of positive squares in 2 ways, for example, as 432879108228009 + 210380955385225 = 20805747^2 + 14504515^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4346351781097 + ... + 4346351781244.

Almost surely, 2^{643260063613234} is an apocalyptic number.

643260063613234 is a deficient number, since it is larger than the sum of its proper divisors (347708142493754).

643260063613234 is a wasteful number, since it uses less digits than its factorization.

643260063613234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8692703562380.

The product of its (nonzero) digits is 6718464, while the sum is 49.

The spelling of 643260063613234 in words is "six hundred forty-three trillion, two hundred sixty billion, sixty-three million, six hundred thirteen thousand, two hundred thirty-four".