640255124002 has 24 divisors (see below), whose sum is σ = 1042310142720. Its totient is φ = 294829170480.

The previous prime is 640255123961. The next prime is 640255124059. The reversal of 640255124002 is 200421552046.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2009074 + ... + 2305837.

It is an arithmetic number, because the mean of its divisors is an integer number (43429589280).

Almost surely, 2^640255124002 is an apocalyptic number.

640255124002 is a deficient number, since it is larger than the sum of its proper divisors (402055018718).

640255124002 is a wasteful number, since it uses less digits than its factorization.

640255124002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4315378 (or 4315365 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 640255124002 its reverse (200421552046), we get a palindrome (840676676048).

The spelling of 640255124002 in words is "six hundred forty billion, two hundred fifty-five million, one hundred twenty-four thousand, two".