640151361724322 has 32 divisors (see below), whose sum is σ = 1119800865456000. Its totient is φ = 274349955156144.

The previous prime is 640151361724279. The next prime is 640151361724331. The reversal of 640151361724322 is 223427163151046.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 418714304 + ... + 420240372.

It is an arithmetic number, because the mean of its divisors is an integer number (34993777045500).

Almost surely, 2^{640151361724322} is an apocalyptic number.

640151361724322 is a deficient number, since it is larger than the sum of its proper divisors (479649503731678).

640151361724322 is a wasteful number, since it uses less digits than its factorization.

640151361724322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137575 (or 2137561 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 640151361724322 in words is "six hundred forty trillion, one hundred fifty-one billion, three hundred sixty-one million, seven hundred twenty-four thousand, three hundred twenty-two".