145163320023 has 4 divisors (see below), whose sum is σ = 193551093368. Its totient is φ = 96775546680.

The previous prime is 145163319989. The next prime is 145163320037. The reversal of 145163320023 is 320023361541.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 145163320023 - 2⁸ = 145163319767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145163320073) 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, 24193886668 + ... + 24193886673.

It is an arithmetic number, because the mean of its divisors is an integer number (48387773342).

Almost surely, 2^145163320023 is an apocalyptic number.

145163320023 is a deficient number, since it is larger than the sum of its proper divisors (48387773345).

145163320023 is an equidigital number, since it uses as much as digits as its factorization.

145163320023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48387773344.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 145163320023 its reverse (320023361541), we get a palindrome (465186681564).

The spelling of 145163320023 in words is "one hundred forty-five billion, one hundred sixty-three million, three hundred twenty thousand, twenty-three".