645163575306 has 16 divisors (see below), whose sum is σ = 1297082792448. Its totient is φ = 213928584800.

The previous prime is 645163575289. The next prime is 645163575337. The reversal of 645163575306 is 603575361546.

645163575306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281483835 + ... + 281486126.

It is an arithmetic number, because the mean of its divisors is an integer number (81067674528).

Almost surely, 2^645163575306 is an apocalyptic number.

645163575306 is an abundant number, since it is smaller than the sum of its proper divisors (651919217142).

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

645163575306 is a wasteful number, since it uses less digits than its factorization.

645163575306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562970157.

The product of its (nonzero) digits is 6804000, while the sum is 51.

The spelling of 645163575306 in words is "six hundred forty-five billion, one hundred sixty-three million, five hundred seventy-five thousand, three hundred six".