131668043556 has 48 divisors (see below), whose sum is σ = 363222195840. Its totient is φ = 36322218240.

The previous prime is 131668043509. The next prime is 131668043557. The reversal of 131668043556 is 655340866131.

It is not an unprimeable number, because it can be changed into a prime (131668043557) 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 15 ways as a sum of consecutive naturals, for example, 27023025 + ... + 27027896.

It is an arithmetic number, because the mean of its divisors is an integer number (7567129080).

Almost surely, 2^131668043556 is an apocalyptic number.

It is an amenable number.

131668043556 is an abundant number, since it is smaller than the sum of its proper divisors (231554152284).

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

131668043556 is a wasteful number, since it uses less digits than its factorization.

131668043556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54050964 (or 54050962 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 131668043556 in words is "one hundred thirty-one billion, six hundred sixty-eight million, forty-three thousand, five hundred fifty-six".