640325310245 has 8 divisors (see below), whose sum is σ = 768410285184. Its totient is φ = 512246972944.

The previous prime is 640325310241. The next prime is 640325310269. The reversal of 640325310245 is 542013523046.

640325310245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 640325310245 - 2² = 640325310241 is a prime.

It is a super-3 number, since 3×640325310245³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640325310241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1444649 + ... + 1835118.

It is an arithmetic number, because the mean of its divisors is an integer number (96051285648).

Almost surely, 2^640325310245 is an apocalyptic number.

It is an amenable number.

640325310245 is a deficient number, since it is larger than the sum of its proper divisors (128084974939).

640325310245 is a wasteful number, since it uses less digits than its factorization.

640325310245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318819.

The product of its (nonzero) digits is 86400, while the sum is 35.

The spelling of 640325310245 in words is "six hundred forty billion, three hundred twenty-five million, three hundred ten thousand, two hundred forty-five".