640300252112 has 20 divisors (see below), whose sum is σ = 1240639510656. Its totient is φ = 320135217120.

The previous prime is 640300252099. The next prime is 640300252129. The reversal of 640300252112 is 211252003046.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 573314 + ... + 1268577.

Almost surely, 2^640300252112 is an apocalyptic number.

It is an amenable number.

640300252112 is a deficient number, since it is larger than the sum of its proper divisors (600339258544).

640300252112 is a wasteful number, since it uses less digits than its factorization.

640300252112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1863626 (or 1863620 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 640300252112 its reverse (211252003046), we get a palindrome (851552255158).

The spelling of 640300252112 in words is "six hundred forty billion, three hundred million, two hundred fifty-two thousand, one hundred twelve".