645330206632 has 64 divisors (see below), whose sum is σ = 1271956276800. Its totient is φ = 306556669440.

The previous prime is 645330206603. The next prime is 645330206639. The reversal of 645330206632 is 236602033546.

645330206632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (645330206639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80551507 + ... + 80559517.

It is an arithmetic number, because the mean of its divisors is an integer number (19874316825).

Almost surely, 2^645330206632 is an apocalyptic number.

It is an amenable number.

645330206632 is a deficient number, since it is larger than the sum of its proper divisors (626626070168).

645330206632 is a wasteful number, since it uses less digits than its factorization.

645330206632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14426 (or 14422 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 40.

The spelling of 645330206632 in words is "six hundred forty-five billion, three hundred thirty million, two hundred six thousand, six hundred thirty-two".