645622004330 has 16 divisors (see below), whose sum is σ = 1186845557760. Its totient is φ = 252754146192.

The previous prime is 645622004317. The next prime is 645622004341. The reversal of 645622004330 is 33400226546.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686831450 + ... + 686832389.

It is an arithmetic number, because the mean of its divisors is an integer number (74177847360).

Almost surely, 2^645622004330 is an apocalyptic number.

645622004330 is a deficient number, since it is larger than the sum of its proper divisors (541223553430).

645622004330 is a wasteful number, since it uses less digits than its factorization.

645622004330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373663893.

The product of its (nonzero) digits is 103680, while the sum is 35.

The spelling of 645622004330 in words is "six hundred forty-five billion, six hundred twenty-two million, four thousand, three hundred thirty".