145355144424 has 128 divisors (see below), whose sum is σ = 433504880640. Its totient is φ = 39710829312.

The previous prime is 145355144419. The next prime is 145355144443. The reversal of 145355144424 is 424441553541.

It is a super-2 number, since 2×145355144424² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17472714 + ... + 17481030.

It is an arithmetic number, because the mean of its divisors is an integer number (3386756880).

Almost surely, 2^145355144424 is an apocalyptic number.

145355144424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145355144424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216752440320).

145355144424 is an abundant number, since it is smaller than the sum of its proper divisors (288149736216).

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

145355144424 is a wasteful number, since it uses less digits than its factorization.

145355144424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12879 (or 12875 counting only the distinct ones).

The product of its digits is 768000, while the sum is 42.

Adding to 145355144424 its reverse (424441553541), we get a palindrome (569796697965).

The spelling of 145355144424 in words is "one hundred forty-five billion, three hundred fifty-five million, one hundred forty-four thousand, four hundred twenty-four".