646532713233 has 24 divisors (see below), whose sum is σ = 1018844299200. Its totient is φ = 391812824160.

The previous prime is 646532713217. The next prime is 646532713243. The reversal of 646532713233 is 332317235646.

646532713233 is a `hidden beast` number, since 6 + 4 + 6 + 53 + 271 + 323 + 3 = 666.

It is not a de Polignac number, because 646532713233 - 2⁴ = 646532713217 is a prime.

It is a super-2 number, since 2×646532713233² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (646532713243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1400343 + ... + 1803891.

It is an arithmetic number, because the mean of its divisors is an integer number (42451845800).

Almost surely, 2^646532713233 is an apocalyptic number.

It is an amenable number.

646532713233 is a deficient number, since it is larger than the sum of its proper divisors (372311585967).

646532713233 is a wasteful number, since it uses less digits than its factorization.

646532713233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419749 (or 419746 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 45.

Adding to 646532713233 its reverse (332317235646), we get a palindrome (978849948879).

The spelling of 646532713233 in words is "six hundred forty-six billion, five hundred thirty-two million, seven hundred thirteen thousand, two hundred thirty-three".