145344324440 has 32 divisors (see below), whose sum is σ = 373742549280. Its totient is φ = 49832339712.

The previous prime is 145344324353. The next prime is 145344324449. The reversal of 145344324440 is 44423443541.

It is a super-2 number, since 2×145344324440² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145344324394 and 145344324403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145344324449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259543157 + ... + 259543716.

It is an arithmetic number, because the mean of its divisors is an integer number (11679454665).

Almost surely, 2^145344324440 is an apocalyptic number.

145344324440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145344324440 is an abundant number, since it is smaller than the sum of its proper divisors (228398224840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145344324440 is a wasteful number, since it uses less digits than its factorization.

145344324440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519086891 (or 519086887 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 38.

Adding to 145344324440 its reverse (44423443541), we get a palindrome (189767767981).

The spelling of 145344324440 in words is "one hundred forty-five billion, three hundred forty-four million, three hundred twenty-four thousand, four hundred forty".