136163977 has 2 divisors, whose sum is σ = 136163978. Its totient is φ = 136163976.

The previous prime is 136163971. The next prime is 136163981. The reversal of 136163977 is 779361631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120648256 + 15515721 = 10984^2 + 3939^2 .

It is a cyclic number.

It is not a de Polignac number, because 136163977 - 2³ = 136163969 is a prime.

It is not a weakly prime, because it can be changed into another prime (136163971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68081988 + 68081989.

It is an arithmetic number, because the mean of its divisors is an integer number (68081989).

Almost surely, 2^136163977 is an apocalyptic number.

It is an amenable number.

136163977 is a deficient number, since it is larger than the sum of its proper divisors (1).

136163977 is an equidigital number, since it uses as much as digits as its factorization.

136163977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142884, while the sum is 43.

The square root of 136163977 is about 11668.9321276628. The cubic root of 136163977 is about 514.4629170039.

The spelling of 136163977 in words is "one hundred thirty-six million, one hundred sixty-three thousand, nine hundred seventy-seven".