131444561660 has 12 divisors (see below), whose sum is σ = 276033579528. Its totient is φ = 52577824656.

The previous prime is 131444561627. The next prime is 131444561671. The reversal of 131444561660 is 66165444131.

It is a happy number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 3286114022 + ... + 3286114061.

It is an arithmetic number, because the mean of its divisors is an integer number (23002798294).

Almost surely, 2^131444561660 is an apocalyptic number.

131444561660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131444561660 is an abundant number, since it is smaller than the sum of its proper divisors (144589017868).

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

131444561660 is a wasteful number, since it uses less digits than its factorization.

131444561660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6572228092 (or 6572228090 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 131444561660 in words is "one hundred thirty-one billion, four hundred forty-four million, five hundred sixty-one thousand, six hundred sixty".