145324993423 has 4 divisors (see below), whose sum is σ = 145328189688. Its totient is φ = 145321797160.

The previous prime is 145324993409. The next prime is 145324993433. The reversal of 145324993423 is 324399423541.

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

It is a cyclic number.

It is not a de Polignac number, because 145324993423 - 2²⁵ = 145291438991 is a prime.

It is a super-2 number, since 2×145324993423² (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 (145324993433) 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, 1528933 + ... + 1621198.

It is an arithmetic number, because the mean of its divisors is an integer number (36332047422).

Almost surely, 2^145324993423 is an apocalyptic number.

145324993423 is a deficient number, since it is larger than the sum of its proper divisors (3196265).

145324993423 is an equidigital number, since it uses as much as digits as its factorization.

145324993423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3196264.

The product of its digits is 2799360, while the sum is 49.

The spelling of 145324993423 in words is "one hundred forty-five billion, three hundred twenty-four million, nine hundred ninety-three thousand, four hundred twenty-three".