645411632206 has 64 divisors (see below), whose sum is σ = 1138439681280. Its totient is φ = 271256912640.

The previous prime is 645411632183. The next prime is 645411632219. The reversal of 645411632206 is 602236114546.

645411632206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24665226 + ... + 24691378.

It is an arithmetic number, because the mean of its divisors is an integer number (17788120020).

Almost surely, 2^645411632206 is an apocalyptic number.

645411632206 is a deficient number, since it is larger than the sum of its proper divisors (493028049074).

645411632206 is a wasteful number, since it uses less digits than its factorization.

645411632206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27601.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 645411632206 in words is "six hundred forty-five billion, four hundred eleven million, six hundred thirty-two thousand, two hundred six".