131544392156861 has 8 divisors (see below), whose sum is σ = 138349792848384. Its totient is φ = 124899118540560.

The previous prime is 131544392156851. The next prime is 131544392156867. The reversal of 131544392156861 is 168651293445131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131544392156861 - 2⁴⁶ = 61175647979197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131544392156861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131544392156867) 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, 40031767121 + ... + 40031770406.

It is an arithmetic number, because the mean of its divisors is an integer number (17293724106048).

Almost surely, 2^{131544392156861} is an apocalyptic number.

It is an amenable number.

131544392156861 is a deficient number, since it is larger than the sum of its proper divisors (6805400691523).

131544392156861 is an equidigital number, since it uses as much as digits as its factorization.

131544392156861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80063537611.

The product of its digits is 18662400, while the sum is 59.

The spelling of 131544392156861 in words is "one hundred thirty-one trillion, five hundred forty-four billion, three hundred ninety-two million, one hundred fifty-six thousand, eight hundred sixty-one".