144531365257 has 8 divisors (see below), whose sum is σ = 148251081600. Its totient is φ = 140838506544.

The previous prime is 144531365219. The next prime is 144531365267. The reversal of 144531365257 is 752563135441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144531365257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144531365207) 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, 6703507 + ... + 6725032.

It is an arithmetic number, because the mean of its divisors is an integer number (18531385200).

Almost surely, 2^144531365257 is an apocalyptic number.

It is an amenable number.

144531365257 is a deficient number, since it is larger than the sum of its proper divisors (3719716343).

144531365257 is a wasteful number, since it uses less digits than its factorization.

144531365257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13428815.

The product of its digits is 1512000, while the sum is 46.

The spelling of 144531365257 in words is "one hundred forty-four billion, five hundred thirty-one million, three hundred sixty-five thousand, two hundred fifty-seven".