145299718623 has 4 divisors (see below), whose sum is σ = 193732958168. Its totient is φ = 96866479080.

The previous prime is 145299718579. The next prime is 145299718673. The reversal of 145299718623 is 326817992541.

145299718623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326817992541 = 3 ⋅108939330847.

It is not a de Polignac number, because 145299718623 - 2⁸ = 145299718367 is a prime.

It is a super-2 number, since 2×145299718623² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145299718673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24216619768 + ... + 24216619773.

It is an arithmetic number, because the mean of its divisors is an integer number (48433239542).

Almost surely, 2^145299718623 is an apocalyptic number.

145299718623 is a deficient number, since it is larger than the sum of its proper divisors (48433239545).

145299718623 is an equidigital number, since it uses as much as digits as its factorization.

145299718623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48433239544.

The product of its digits is 6531840, while the sum is 57.

The spelling of 145299718623 in words is "one hundred forty-five billion, two hundred ninety-nine million, seven hundred eighteen thousand, six hundred twenty-three".