131783254637777 has 2 divisors, whose sum is σ = 131783254637778. Its totient is φ = 131783254637776.

The previous prime is 131783254637729. The next prime is 131783254637857. The reversal of 131783254637777 is 777736452387131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129213440449681 + 2569814188096 = 11367209^2 + 1603064^2 .

It is a cyclic number.

It is not a de Polignac number, because 131783254637777 - 2¹⁰ = 131783254636753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131783254637777.

It is not a weakly prime, because it can be changed into another prime (131783254637707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65891627318888 + 65891627318889.

It is an arithmetic number, because the mean of its divisors is an integer number (65891627318889).

Almost surely, 2^{131783254637777} is an apocalyptic number.

It is an amenable number.

131783254637777 is a deficient number, since it is larger than the sum of its proper divisors (1).

131783254637777 is an equidigital number, since it uses as much as digits as its factorization.

131783254637777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 871274880, while the sum is 71.

The spelling of 131783254637777 in words is "one hundred thirty-one trillion, seven hundred eighty-three billion, two hundred fifty-four million, six hundred thirty-seven thousand, seven hundred seventy-seven".