131701776877 has 6 divisors (see below), whose sum is σ = 144763110254. Its totient is φ = 119728887960.

The previous prime is 131701776863. The next prime is 131701776881. The reversal of 131701776877 is 778677107131.

It can be written as a sum of positive squares in only one way, i.e., 66175504516 + 65526272361 = 257246^2 + 255981^2 .

It is not a de Polignac number, because 131701776877 - 2¹⁹ = 131701252589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131701776277) 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 5 ways as a sum of consecutive naturals, for example, 544222098 + ... + 544222339.

Almost surely, 2^131701776877 is an apocalyptic number.

It is an amenable number.

131701776877 is a deficient number, since it is larger than the sum of its proper divisors (13061333377).

131701776877 is a wasteful number, since it uses less digits than its factorization.

131701776877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088444459 (or 1088444448 counting only the distinct ones).

The product of its (nonzero) digits is 2420208, while the sum is 55.

The spelling of 131701776877 in words is "one hundred thirty-one billion, seven hundred one million, seven hundred seventy-six thousand, eight hundred seventy-seven".