640313012226 has 16 divisors (see below), whose sum is σ = 1348027394400. Its totient is φ = 202204109088.

The previous prime is 640313012161. The next prime is 640313012231. The reversal of 640313012226 is 622210313046.

It is a junction number, because it is equal to n+sod(n) for n = 640313012193 and 640313012202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2808390291 + ... + 2808390518.

It is an arithmetic number, because the mean of its divisors is an integer number (84251712150).

Almost surely, 2^640313012226 is an apocalyptic number.

640313012226 is an abundant number, since it is smaller than the sum of its proper divisors (707714382174).

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

640313012226 is a wasteful number, since it uses less digits than its factorization.

640313012226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5616780833.

The product of its (nonzero) digits is 10368, while the sum is 30.

The spelling of 640313012226 in words is "six hundred forty billion, three hundred thirteen million, twelve thousand, two hundred twenty-six".