145597417169 has 4 divisors (see below), whose sum is σ = 145600577844. Its totient is φ = 145594256496.

The previous prime is 145597417159. The next prime is 145597417219. The reversal of 145597417169 is 961714795541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 961714795541 = 12497 ⋅76955653.

It can be written as a sum of positive squares in 2 ways, for example, as 55123996225 + 90473420944 = 234785^2 + 300788^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145597417169 is a prime.

It is a super-2 number, since 2×145597417169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145597417159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1510202 + ... + 1603715.

It is an arithmetic number, because the mean of its divisors is an integer number (36400144461).

Almost surely, 2^145597417169 is an apocalyptic number.

It is an amenable number.

145597417169 is a deficient number, since it is larger than the sum of its proper divisors (3160675).

145597417169 is an equidigital number, since it uses as much as digits as its factorization.

145597417169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3160674.

The product of its digits is 9525600, while the sum is 59.

The spelling of 145597417169 in words is "one hundred forty-five billion, five hundred ninety-seven million, four hundred seventeen thousand, one hundred sixty-nine".