145390452593 has 2 divisors, whose sum is σ = 145390452594. Its totient is φ = 145390452592.

The previous prime is 145390452583. The next prime is 145390452619. The reversal of 145390452593 is 395254093541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145231112464 + 159340129 = 381092^2 + 12623^2 .

It is a cyclic number.

It is not a de Polignac number, because 145390452593 - 2¹⁶ = 145390387057 is a prime.

It is a super-2 number, since 2×145390452593² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (145390452583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72695226296 + 72695226297.

It is an arithmetic number, because the mean of its divisors is an integer number (72695226297).

Almost surely, 2^145390452593 is an apocalyptic number.

It is an amenable number.

145390452593 is a deficient number, since it is larger than the sum of its proper divisors (1).

145390452593 is an equidigital number, since it uses as much as digits as its factorization.

145390452593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916000, while the sum is 50.

The spelling of 145390452593 in words is "one hundred forty-five billion, three hundred ninety million, four hundred fifty-two thousand, five hundred ninety-three".