136138077769 has 2 divisors, whose sum is σ = 136138077770. Its totient is φ = 136138077768.

The previous prime is 136138077743. The next prime is 136138077797. The reversal of 136138077769 is 967770831631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95641747600 + 40496330169 = 309260^2 + 201237^2 .

It is a cyclic number.

It is not a de Polignac number, because 136138077769 - 2⁷ = 136138077641 is a prime.

It is a super-2 number, since 2×136138077769² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (136138077739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68069038884 + 68069038885.

It is an arithmetic number, because the mean of its divisors is an integer number (68069038885).

Almost surely, 2^136138077769 is an apocalyptic number.

It is an amenable number.

136138077769 is a deficient number, since it is larger than the sum of its proper divisors (1).

136138077769 is an equidigital number, since it uses as much as digits as its factorization.

136138077769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8001504, while the sum is 58.

The spelling of 136138077769 in words is "one hundred thirty-six billion, one hundred thirty-eight million, seventy-seven thousand, seven hundred sixty-nine".