136773779 has 2 divisors, whose sum is σ = 136773780. Its totient is φ = 136773778.

The previous prime is 136773743. The next prime is 136773781. The reversal of 136773779 is 977377631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136773779 - 2²⁴ = 119996563 is a prime.

Together with 136773781, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136773739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68386889 + 68386890.

It is an arithmetic number, because the mean of its divisors is an integer number (68386890).

Almost surely, 2^136773779 is an apocalyptic number.

136773779 is a deficient number, since it is larger than the sum of its proper divisors (1).

136773779 is an equidigital number, since it uses as much as digits as its factorization.

136773779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166886, while the sum is 50.

The square root of 136773779 is about 11695.0322359539. The cubic root of 136773779 is about 515.2297702210.

The spelling of 136773779 in words is "one hundred thirty-six million, seven hundred seventy-three thousand, seven hundred seventy-nine".