131636051668081 has 32 divisors (see below), whose sum is σ = 136567203102720. Its totient is φ = 126813975288000.

The previous prime is 131636051668057. The next prime is 131636051668087. The reversal of 131636051668081 is 180866150636131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 131636051668081 - 2¹⁷ = 131636051537009 is a prime.

It is a super-2 number, since 2×131636051668081² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131636051668087) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3079688796 + ... + 3079731538.

It is an arithmetic number, because the mean of its divisors is an integer number (4267725096960).

Almost surely, 2^{131636051668081} is an apocalyptic number.

It is an amenable number.

131636051668081 is a deficient number, since it is larger than the sum of its proper divisors (4931151434639).

131636051668081 is a wasteful number, since it uses less digits than its factorization.

131636051668081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46917.

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 131636051668081 in words is "one hundred thirty-one trillion, six hundred thirty-six billion, fifty-one million, six hundred sixty-eight thousand, eighty-one".