645624432059 has 2 divisors, whose sum is σ = 645624432060. Its totient is φ = 645624432058.

The previous prime is 645624431999. The next prime is 645624432067. The reversal of 645624432059 is 950234426546.

645624432059 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 645624432059 - 2¹² = 645624427963 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 645624431998 and 645624432016.

It is not a weakly prime, because it can be changed into another prime (645624432559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 322812216029 + 322812216030.

It is an arithmetic number, because the mean of its divisors is an integer number (322812216030).

Almost surely, 2^645624432059 is an apocalyptic number.

645624432059 is a deficient number, since it is larger than the sum of its proper divisors (1).

645624432059 is an equidigital number, since it uses as much as digits as its factorization.

645624432059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6220800, while the sum is 50.

The spelling of 645624432059 in words is "six hundred forty-five billion, six hundred twenty-four million, four hundred thirty-two thousand, fifty-nine".