145317939589 has 2 divisors, whose sum is σ = 145317939590. Its totient is φ = 145317939588.

The previous prime is 145317939577. The next prime is 145317939629. The reversal of 145317939589 is 985939713541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144959140225 + 358799364 = 380735^2 + 18942^2 .

It is a cyclic number.

It is not a de Polignac number, because 145317939589 - 2⁷ = 145317939461 is a prime.

It is a super-2 number, since 2×145317939589² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145317939589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145317939089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72658969794 + 72658969795.

It is an arithmetic number, because the mean of its divisors is an integer number (72658969795).

Almost surely, 2^145317939589 is an apocalyptic number.

It is an amenable number.

145317939589 is a deficient number, since it is larger than the sum of its proper divisors (1).

145317939589 is an equidigital number, since it uses as much as digits as its factorization.

145317939589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36741600, while the sum is 64.

The spelling of 145317939589 in words is "one hundred forty-five billion, three hundred seventeen million, nine hundred thirty-nine thousand, five hundred eighty-nine".