131866109342106 has 24 divisors (see below), whose sum is σ = 271052762389920. Its totient is φ = 42767386810992.

The previous prime is 131866109342063. The next prime is 131866109342129. The reversal of 131866109342106 is 601243901668131.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8026903726 + ... + 8026920153.

It is an arithmetic number, because the mean of its divisors is an integer number (11293865099580).

Almost surely, 2^{131866109342106} is an apocalyptic number.

131866109342106 is an abundant number, since it is smaller than the sum of its proper divisors (139186653047814).

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

131866109342106 is a wasteful number, since it uses less digits than its factorization.

131866109342106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16053823958 (or 16053823921 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 131866109342106 in words is "one hundred thirty-one trillion, eight hundred sixty-six billion, one hundred nine million, three hundred forty-two thousand, one hundred six".