131444628585 has 8 divisors (see below), whose sum is σ = 210311405760. Its totient is φ = 70103801904.

The previous prime is 131444628583. The next prime is 131444628589. The reversal of 131444628585 is 585826444131.

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

It is not a de Polignac number, because 131444628585 - 2¹ = 131444628583 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131444628583) 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, 4381487605 + ... + 4381487634.

It is an arithmetic number, because the mean of its divisors is an integer number (26288925720).

Almost surely, 2^131444628585 is an apocalyptic number.

131444628585 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131444628585 is a deficient number, since it is larger than the sum of its proper divisors (78866777175).

131444628585 is an equidigital number, since it uses as much as digits as its factorization.

131444628585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8762975247.

The product of its digits is 3686400, while the sum is 51.

The spelling of 131444628585 in words is "one hundred thirty-one billion, four hundred forty-four million, six hundred twenty-eight thousand, five hundred eighty-five".