145647573073 has 2 divisors, whose sum is σ = 145647573074. Its totient is φ = 145647573072.

The previous prime is 145647573053. The next prime is 145647573089. The reversal of 145647573073 is 370375746541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143567483409 + 2080089664 = 378903^2 + 45608^2 .

It is an emirp because it is prime and its reverse (370375746541) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145647573073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145647573073.

It is not a weakly prime, because it can be changed into another prime (145647573013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72823786536 + 72823786537.

It is an arithmetic number, because the mean of its divisors is an integer number (72823786537).

Almost surely, 2^145647573073 is an apocalyptic number.

It is an amenable number.

145647573073 is a deficient number, since it is larger than the sum of its proper divisors (1).

145647573073 is an equidigital number, since it uses as much as digits as its factorization.

145647573073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7408800, while the sum is 52.

The spelling of 145647573073 in words is "one hundred forty-five billion, six hundred forty-seven million, five hundred seventy-three thousand, seventy-three".