131943948489 has 16 divisors (see below), whose sum is σ = 198676986240. Its totient is φ = 86520620880.

The previous prime is 131943948481. The next prime is 131943948503. The reversal of 131943948489 is 984849349131.

131943948489 is a `hidden beast` number, since 1 + 3 + 1 + 94 + 394 + 84 + 89 = 666.

It is not a de Polignac number, because 131943948489 - 2³ = 131943948481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131943948481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40054197 + ... + 40057490.

It is an arithmetic number, because the mean of its divisors is an integer number (12417311640).

Almost surely, 2^131943948489 is an apocalyptic number.

It is an amenable number.

131943948489 is a deficient number, since it is larger than the sum of its proper divisors (66733037751).

131943948489 is an equidigital number, since it uses as much as digits as its factorization.

131943948489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80111757 (or 80111751 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 63.

The spelling of 131943948489 in words is "one hundred thirty-one billion, nine hundred forty-three million, nine hundred forty-eight thousand, four hundred eighty-nine".