136618771 has 2 divisors, whose sum is σ = 136618772. Its totient is φ = 136618770.

The previous prime is 136618751. The next prime is 136618793. The reversal of 136618771 is 177816631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136618771 - 2¹¹ = 136616723 is a prime.

It is not a weakly prime, because it can be changed into another prime (136618751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68309385 + 68309386.

It is an arithmetic number, because the mean of its divisors is an integer number (68309386).

Almost surely, 2^136618771 is an apocalyptic number.

136618771 is a deficient number, since it is larger than the sum of its proper divisors (1).

136618771 is an equidigital number, since it uses as much as digits as its factorization.

136618771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 40.

The square root of 136618771 is about 11688.4032699082. The cubic root of 136618771 is about 515.0350571542.

The spelling of 136618771 in words is "one hundred thirty-six million, six hundred eighteen thousand, seven hundred seventy-one".