131462243861761 has 4 divisors (see below), whose sum is σ = 131492894890500. Its totient is φ = 131431592833024.

The previous prime is 131462243861719. The next prime is 131462243861779. The reversal of 131462243861761 is 167168342264131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 113870561130225 + 17591682731536 = 10671015^2 + 4194244^2 .

It is a cyclic number.

It is not a de Polignac number, because 131462243861761 - 2⁴¹ = 129263220606209 is a prime.

It is a super-2 number, since 2×131462243861761² (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 (131462243861161) 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 3 ways as a sum of consecutive naturals, for example, 15325507936 + ... + 15325516513.

It is an arithmetic number, because the mean of its divisors is an integer number (32873223722625).

Almost surely, 2^{131462243861761} is an apocalyptic number.

It is an amenable number.

131462243861761 is a deficient number, since it is larger than the sum of its proper divisors (30651028739).

131462243861761 is an equidigital number, since it uses as much as digits as its factorization.

131462243861761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30651028738.

The product of its digits is 6967296, while the sum is 55.

The spelling of 131462243861761 in words is "one hundred thirty-one trillion, four hundred sixty-two billion, two hundred forty-three million, eight hundred sixty-one thousand, seven hundred sixty-one".