645434500233 has 16 divisors (see below), whose sum is σ = 891014875200. Its totient is φ = 415097242560.

The previous prime is 645434500187. The next prime is 645434500247. The reversal of 645434500233 is 332005434546.

It is not a de Polignac number, because 645434500233 - 2¹³ = 645434492041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 645434500191 and 645434500200.

It is not an unprimeable number, because it can be changed into a prime (645434502233) 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, 3065838 + ... + 3269591.

It is an arithmetic number, because the mean of its divisors is an integer number (55688429700).

Almost surely, 2^645434500233 is an apocalyptic number.

It is an amenable number.

645434500233 is a deficient number, since it is larger than the sum of its proper divisors (245580374967).

645434500233 is a wasteful number, since it uses less digits than its factorization.

645434500233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6336632.

The product of its (nonzero) digits is 518400, while the sum is 39.

Adding to 645434500233 its reverse (332005434546), we get a palindrome (977439934779).

The spelling of 645434500233 in words is "six hundred forty-five billion, four hundred thirty-four million, five hundred thousand, two hundred thirty-three".