136556970156205 has 16 divisors (see below), whose sum is σ = 173508782813424. Its totient is φ = 102818712084480.

The previous prime is 136556970156197. The next prime is 136556970156221. The reversal of 136556970156205 is 502651079655631.

It can be written as a sum of positive squares in 8 ways, for example, as 48350856296484 + 88206113859721 = 6953478^2 + 9391811^2 .

It is not a de Polignac number, because 136556970156205 - 2³ = 136556970156197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8555425 + ... + 18609385.

It is an arithmetic number, because the mean of its divisors is an integer number (10844298925839).

Almost surely, 2^{136556970156205} is an apocalyptic number.

It is an amenable number.

136556970156205 is a deficient number, since it is larger than the sum of its proper divisors (36951812657219).

136556970156205 is a wasteful number, since it uses less digits than its factorization.

136556970156205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10213776.

The product of its (nonzero) digits is 51030000, while the sum is 61.

The spelling of 136556970156205 in words is "one hundred thirty-six trillion, five hundred fifty-six billion, nine hundred seventy million, one hundred fifty-six thousand, two hundred five".