645366024803 has 2 divisors, whose sum is σ = 645366024804. Its totient is φ = 645366024802.

The previous prime is 645366024781. The next prime is 645366024827. The reversal of 645366024803 is 308420663546.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 645366024803 - 2²⁸ = 645097589347 is a prime.

It is a super-2 number, since 2×645366024803² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (645366024103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 322683012401 + 322683012402.

It is an arithmetic number, because the mean of its divisors is an integer number (322683012402).

Almost surely, 2^645366024803 is an apocalyptic number.

645366024803 is a deficient number, since it is larger than the sum of its proper divisors (1).

645366024803 is an equidigital number, since it uses as much as digits as its factorization.

645366024803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 645366024803 in words is "six hundred forty-five billion, three hundred sixty-six million, twenty-four thousand, eight hundred three".