131555445440 has 56 divisors (see below), whose sum is σ = 313357138080. Its totient is φ = 52606937088.

The previous prime is 131555445433. The next prime is 131555445443. The reversal of 131555445440 is 44544555131.

131555445440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (131555445443) 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, 1081124 + ... + 1196636.

It is an arithmetic number, because the mean of its divisors is an integer number (5595663180).

Almost surely, 2^131555445440 is an apocalyptic number.

131555445440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131555445440 is an abundant number, since it is smaller than the sum of its proper divisors (181801692640).

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

131555445440 is a wasteful number, since it uses less digits than its factorization.

131555445440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119089 (or 119079 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 41.

The spelling of 131555445440 in words is "one hundred thirty-one billion, five hundred fifty-five million, four hundred forty-five thousand, four hundred forty".