645452412363 has 48 divisors (see below), whose sum is σ = 1026676010880. Its totient is φ = 387495225600.

The previous prime is 645452412347. The next prime is 645452412401. The reversal of 645452412363 is 363214254546.

645452412363 is a `hidden beast` number, since 6 + 4 + 5 + 45 + 241 + 2 + 363 = 666.

It is not a de Polignac number, because 645452412363 - 2⁴ = 645452412347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (645452412323) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 20243728 + ... + 20275586.

It is an arithmetic number, because the mean of its divisors is an integer number (21389083560).

Almost surely, 2^645452412363 is an apocalyptic number.

645452412363 is a deficient number, since it is larger than the sum of its proper divisors (381223598517).

645452412363 is a wasteful number, since it uses less digits than its factorization.

645452412363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33800 (or 33797 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 45.

The spelling of 645452412363 in words is "six hundred forty-five billion, four hundred fifty-two million, four hundred twelve thousand, three hundred sixty-three".