646116325043 has 16 divisors (see below), whose sum is σ = 739975551744. Its totient is φ = 552647020320.

The previous prime is 646116325009. The next prime is 646116325073. The reversal of 646116325043 is 340523611646.

It is a cyclic number.

It is not a de Polignac number, because 646116325043 - 2³⁰ = 645042583219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (646116325073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11791796 + ... + 11846462.

It is an arithmetic number, because the mean of its divisors is an integer number (46248471984).

Almost surely, 2^646116325043 is an apocalyptic number.

646116325043 is a deficient number, since it is larger than the sum of its proper divisors (93859226701).

646116325043 is a wasteful number, since it uses less digits than its factorization.

646116325043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58202.

The product of its (nonzero) digits is 311040, while the sum is 41.

Adding to 646116325043 its reverse (340523611646), we get a palindrome (986639936689).

The spelling of 646116325043 in words is "six hundred forty-six billion, one hundred sixteen million, three hundred twenty-five thousand, forty-three".