645366024804 has 24 divisors (see below), whose sum is σ = 1506690229408. Its totient is φ = 215002555200.

The previous prime is 645366024803. The next prime is 645366024827. The reversal of 645366024804 is 408420663546.

It is not an unprimeable number, because it can be changed into a prime (645366024803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14909122 + ... + 14952345.

Almost surely, 2^645366024804 is an apocalyptic number.

It is an amenable number.

645366024804 is an abundant number, since it is smaller than the sum of its proper divisors (861324204604).

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

645366024804 is a wasteful number, since it uses less digits than its factorization.

645366024804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29863275 (or 29863273 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 48.

The spelling of 645366024804 in words is "six hundred forty-five billion, three hundred sixty-six million, twenty-four thousand, eight hundred four".