145365682609 has 4 divisors (see below), whose sum is σ = 166132208704. Its totient is φ = 124599156516.

The previous prime is 145365682601. The next prime is 145365682667. The reversal of 145365682609 is 906286563541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 906286563541 = 161869 ⋅5598889.

It is a cyclic number.

It is not a de Polignac number, because 145365682609 - 2³ = 145365682601 is a prime.

It is a super-2 number, since 2×145365682609² (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 145365682609.

It is not an unprimeable number, because it can be changed into a prime (145365682601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10383263037 + ... + 10383263050.

It is an arithmetic number, because the mean of its divisors is an integer number (41533052176).

Almost surely, 2^145365682609 is an apocalyptic number.

It is an amenable number.

145365682609 is a deficient number, since it is larger than the sum of its proper divisors (20766526095).

145365682609 is an equidigital number, since it uses as much as digits as its factorization.

145365682609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20766526094.

The product of its (nonzero) digits is 9331200, while the sum is 55.

The spelling of 145365682609 in words is "one hundred forty-five billion, three hundred sixty-five million, six hundred eighty-two thousand, six hundred nine".