145300514321 has 4 divisors (see below), whose sum is σ = 145301282100. Its totient is φ = 145299746544.

The previous prime is 145300514311. The next prime is 145300514339. The reversal of 145300514321 is 123415003541.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 123415003541 = 191 ⋅646151851.

It can be written as a sum of positive squares in 2 ways, for example, as 127992217600 + 17308296721 = 357760^2 + 131561^2 .

It is a cyclic number.

It is not a de Polignac number, because 145300514321 - 2¹⁸ = 145300252177 is a prime.

It is a super-2 number, since 2×145300514321² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145300514311) 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 3 ways as a sum of consecutive naturals, for example, 123695 + ... + 553083.

It is an arithmetic number, because the mean of its divisors is an integer number (36325320525).

Almost surely, 2^145300514321 is an apocalyptic number.

It is an amenable number.

145300514321 is a deficient number, since it is larger than the sum of its proper divisors (767779).

145300514321 is an equidigital number, since it uses as much as digits as its factorization.

145300514321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767778.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 145300514321 its reverse (123415003541), we get a palindrome (268715517862).

The spelling of 145300514321 in words is "one hundred forty-five billion, three hundred million, five hundred fourteen thousand, three hundred twenty-one".