131838129677 has 2 divisors, whose sum is σ = 131838129678. Its totient is φ = 131838129676.

The previous prime is 131838129673. The next prime is 131838129679. The reversal of 131838129677 is 776921838131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89892632041 + 41945497636 = 299821^2 + 204806^2 .

It is a cyclic number.

It is not a de Polignac number, because 131838129677 - 2² = 131838129673 is a prime.

Together with 131838129679, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131838129673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65919064838 + 65919064839.

It is an arithmetic number, because the mean of its divisors is an integer number (65919064839).

Almost surely, 2^131838129677 is an apocalyptic number.

It is an amenable number.

131838129677 is a deficient number, since it is larger than the sum of its proper divisors (1).

131838129677 is an equidigital number, since it uses as much as digits as its factorization.

131838129677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 56.

The spelling of 131838129677 in words is "one hundred thirty-one billion, eight hundred thirty-eight million, one hundred twenty-nine thousand, six hundred seventy-seven".