145604064689 has 2 divisors, whose sum is σ = 145604064690. Its totient is φ = 145604064688.

The previous prime is 145604064673. The next prime is 145604064731. The reversal of 145604064689 is 986460406541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145027680625 + 576384064 = 380825^2 + 24008^2 .

It is a cyclic number.

It is not a de Polignac number, because 145604064689 - 2⁴ = 145604064673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145604064689.

It is not a weakly prime, because it can be changed into another prime (145604064289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72802032344 + 72802032345.

It is an arithmetic number, because the mean of its divisors is an integer number (72802032345).

Almost surely, 2^145604064689 is an apocalyptic number.

It is an amenable number.

145604064689 is a deficient number, since it is larger than the sum of its proper divisors (1).

145604064689 is an equidigital number, since it uses as much as digits as its factorization.

145604064689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4976640, while the sum is 53.

The spelling of 145604064689 in words is "one hundred forty-five billion, six hundred four million, sixty-four thousand, six hundred eighty-nine".