645575325430 has 32 divisors (see below), whose sum is σ = 1385781571584. Its totient is φ = 211716627936.

The previous prime is 645575325419. The next prime is 645575325443. The reversal of 645575325430 is 34523575546.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200487622 + ... + 200490841.

It is an arithmetic number, because the mean of its divisors is an integer number (43305674112).

Almost surely, 2^645575325430 is an apocalyptic number.

645575325430 is an abundant number, since it is smaller than the sum of its proper divisors (740206246154).

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

645575325430 is a wasteful number, since it uses less digits than its factorization.

645575325430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400978500.

The product of its (nonzero) digits is 7560000, while the sum is 49.

The spelling of 645575325430 in words is "six hundred forty-five billion, five hundred seventy-five million, three hundred twenty-five thousand, four hundred thirty".