145043233321 has 4 divisors (see below), whose sum is σ = 165763695232. Its totient is φ = 124322771412.

The previous prime is 145043233301. The next prime is 145043233373. The reversal of 145043233321 is 123332340541.

It is a happy number.

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.

It is not a de Polignac number, because 145043233321 - 2⁷ = 145043233193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145043233301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10360230945 + ... + 10360230958.

It is an arithmetic number, because the mean of its divisors is an integer number (41440923808).

Almost surely, 2^145043233321 is an apocalyptic number.

It is an amenable number.

145043233321 is a deficient number, since it is larger than the sum of its proper divisors (20720461911).

145043233321 is an equidigital number, since it uses as much as digits as its factorization.

145043233321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20720461910.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 145043233321 its reverse (123332340541), we get a palindrome (268375573862).

The spelling of 145043233321 in words is "one hundred forty-five billion, forty-three million, two hundred thirty-three thousand, three hundred twenty-one".