145845220324 has 12 divisors (see below), whose sum is σ = 257092122924. Its totient is φ = 72390328064.

The previous prime is 145845220321. The next prime is 145845220379. The reversal of 145845220324 is 423022548541.

It can be written as a sum of positive squares in 2 ways, for example, as 103812840000 + 42032380324 = 322200^2 + 205018^2 .

It is a super-2 number, since 2×145845220324² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145845220321) 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, 133069909 + ... + 133071004.

It is an arithmetic number, because the mean of its divisors is an integer number (21424343577).

Almost surely, 2^145845220324 is an apocalyptic number.

It is an amenable number.

145845220324 is a deficient number, since it is larger than the sum of its proper divisors (111246902600).

145845220324 is a wasteful number, since it uses less digits than its factorization.

145845220324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266141054 (or 266141052 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 40.

Adding to 145845220324 its reverse (423022548541), we get a palindrome (568867768865).

The spelling of 145845220324 in words is "one hundred forty-five billion, eight hundred forty-five million, two hundred twenty thousand, three hundred twenty-four".