640533430664314 has 24 divisors (see below), whose sum is σ = 1057632357297600. Its totient is φ = 290725275921960.

The previous prime is 640533430664311. The next prime is 640533430664377. The reversal of 640533430664314 is 413466034335046.

It is not an unprimeable number, because it can be changed into a prime (640533430664311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1937486514 + ... + 1937817085.

It is an arithmetic number, because the mean of its divisors is an integer number (44068014887400).

Almost surely, 2^{640533430664314} is an apocalyptic number.

640533430664314 is a deficient number, since it is larger than the sum of its proper divisors (417098926633286).

640533430664314 is a wasteful number, since it uses less digits than its factorization.

640533430664314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3875304306 (or 3875304295 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 52.

The spelling of 640533430664314 in words is "six hundred forty trillion, five hundred thirty-three billion, four hundred thirty million, six hundred sixty-four thousand, three hundred fourteen".