640325310246 has 48 divisors (see below), whose sum is σ = 1405105228800. Its totient is φ = 210714167664.

The previous prime is 640325310241. The next prime is 640325310269. The reversal of 640325310246 is 642013523046.

640325310246 is a `hidden beast` number, since 6 + 403 + 2 + 5 + 3 + 1 + 0 + 246 = 666.

640325310246 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×640325310246³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 640325310246.

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 23 ways as a sum of consecutive naturals, for example, 14150485 + ... + 14195663.

It is an arithmetic number, because the mean of its divisors is an integer number (29273025600).

Almost surely, 2^640325310246 is an apocalyptic number.

640325310246 is an abundant number, since it is smaller than the sum of its proper divisors (764779918554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

640325310246 is a wasteful number, since it uses less digits than its factorization.

640325310246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55233 (or 55230 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 640325310246 in words is "six hundred forty billion, three hundred twenty-five million, three hundred ten thousand, two hundred forty-six".