645606635030 has 32 divisors (see below), whose sum is σ = 1337799295296. Its totient is φ = 219735143424.

The previous prime is 645606634999. The next prime is 645606635033. The reversal of 645606635030 is 30536606546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645606635033) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 33650819 + ... + 33669998.

It is an arithmetic number, because the mean of its divisors is an integer number (41806227978).

Almost surely, 2^645606635030 is an apocalyptic number.

645606635030 is an abundant number, since it is smaller than the sum of its proper divisors (692192660266).

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

645606635030 is a wasteful number, since it uses less digits than its factorization.

645606635030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67320968.

The product of its (nonzero) digits is 1166400, while the sum is 44.

The spelling of 645606635030 in words is "six hundred forty-five billion, six hundred six million, six hundred thirty-five thousand, thirty".