145531525344 has 24 divisors (see below), whose sum is σ = 382020254280. Its totient is φ = 48510508416.

The previous prime is 145531525343. The next prime is 145531525417. The reversal of 145531525344 is 443525135541.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 145531525296 and 145531525305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145531525343) 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, 757976599 + ... + 757976790.

It is an arithmetic number, because the mean of its divisors is an integer number (15917510595).

Almost surely, 2^145531525344 is an apocalyptic number.

It is an amenable number.

145531525344 is an abundant number, since it is smaller than the sum of its proper divisors (236488728936).

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

145531525344 is a wasteful number, since it uses less digits than its factorization.

145531525344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515953402 (or 1515953394 counting only the distinct ones).

The product of its digits is 720000, while the sum is 42.

The spelling of 145531525344 in words is "one hundred forty-five billion, five hundred thirty-one million, five hundred twenty-five thousand, three hundred forty-four".