136138077697 has 4 divisors (see below), whose sum is σ = 136146184020. Its totient is φ = 136129971376.

The previous prime is 136138077671. The next prime is 136138077703. The reversal of 136138077697 is 796770831631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 796770831631 = 457043 ⋅1743317.

It can be written as a sum of positive squares in 2 ways, for example, as 6160523121 + 129977554576 = 78489^2 + 360524^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136138077697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136138077617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4027918 + ... + 4061575.

It is an arithmetic number, because the mean of its divisors is an integer number (34036546005).

Almost surely, 2^136138077697 is an apocalyptic number.

It is an amenable number.

136138077697 is a deficient number, since it is larger than the sum of its proper divisors (8106323).

136138077697 is an equidigital number, since it uses as much as digits as its factorization.

136138077697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8106322.

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

The spelling of 136138077697 in words is "one hundred thirty-six billion, one hundred thirty-eight million, seventy-seven thousand, six hundred ninety-seven".