134687389777 has 2 divisors, whose sum is σ = 134687389778. Its totient is φ = 134687389776.

The previous prime is 134687389757. The next prime is 134687389789. The reversal of 134687389777 is 777983786431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133490852496 + 1196537281 = 365364^2 + 34591^2 .

It is a cyclic number.

It is not a de Polignac number, because 134687389777 - 2²³ = 134679001169 is a prime.

It is not a weakly prime, because it can be changed into another prime (134687389747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67343694888 + 67343694889.

It is an arithmetic number, because the mean of its divisors is an integer number (67343694889).

Almost surely, 2^134687389777 is an apocalyptic number.

It is an amenable number.

134687389777 is a deficient number, since it is larger than the sum of its proper divisors (1).

134687389777 is an equidigital number, since it uses as much as digits as its factorization.

134687389777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 298722816, while the sum is 70.

The spelling of 134687389777 in words is "one hundred thirty-four billion, six hundred eighty-seven million, three hundred eighty-nine thousand, seven hundred seventy-seven".