145532533321 has 16 divisors (see below), whose sum is σ = 168991119360. Its totient is φ = 122745102480.

The previous prime is 145532533309. The next prime is 145532533379. The reversal of 145532533321 is 123335235541.

It is not a de Polignac number, because 145532533321 - 2⁹ = 145532532809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145532533721) 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 15 ways as a sum of consecutive naturals, for example, 256950 + ... + 597568.

It is an arithmetic number, because the mean of its divisors is an integer number (10561944960).

Almost surely, 2^145532533321 is an apocalyptic number.

It is an amenable number.

145532533321 is a deficient number, since it is larger than the sum of its proper divisors (23458586039).

145532533321 is an equidigital number, since it uses as much as digits as its factorization.

145532533321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341604.

The product of its digits is 162000, while the sum is 37.

Adding to 145532533321 its reverse (123335235541), we get a palindrome (268867768862).

The spelling of 145532533321 in words is "one hundred forty-five billion, five hundred thirty-two million, five hundred thirty-three thousand, three hundred twenty-one".