131379477789 has 16 divisors (see below), whose sum is σ = 205608038528. Its totient is φ = 73044960192.

The previous prime is 131379477767. The next prime is 131379477797. The reversal of 131379477789 is 987774973131.

It is not a de Polignac number, because 131379477789 - 2²⁰ = 131378429213 is a prime.

It is a super-2 number, since 2×131379477789² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131379477589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84542002 + ... + 84543555.

It is an arithmetic number, because the mean of its divisors is an integer number (12850502408).

Almost surely, 2^131379477789 is an apocalyptic number.

It is an amenable number.

131379477789 is a deficient number, since it is larger than the sum of its proper divisors (74228560739).

131379477789 is a wasteful number, since it uses less digits than its factorization.

131379477789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169085604.

The product of its digits is 56010528, while the sum is 66.

The spelling of 131379477789 in words is "one hundred thirty-one billion, three hundred seventy-nine million, four hundred seventy-seven thousand, seven hundred eighty-nine".