645431314235 has 16 divisors (see below), whose sum is σ = 801640355040. Its totient is φ = 498281656320.

The previous prime is 645431314189. The next prime is 645431314267. The reversal of 645431314235 is 532413134546.

It is a happy number.

645431314235 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 645431314235 - 2²⁰ = 645430265659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 645431314192 and 645431314201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 872582 + ... + 1432571.

It is an arithmetic number, because the mean of its divisors is an integer number (50102522190).

Almost surely, 2^645431314235 is an apocalyptic number.

645431314235 is a deficient number, since it is larger than the sum of its proper divisors (156209040805).

645431314235 is a wasteful number, since it uses less digits than its factorization.

645431314235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307118.

The product of its digits is 518400, while the sum is 41.

The spelling of 645431314235 in words is "six hundred forty-five billion, four hundred thirty-one million, three hundred fourteen thousand, two hundred thirty-five".