136287965585 has 16 divisors (see below), whose sum is σ = 163802642256. Its totient is φ = 108859127808.

The previous prime is 136287965563. The next prime is 136287965623. The reversal of 136287965585 is 585569782631.

It is a Cunningham number, because it is equal to 369172²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 46964090944 + 89323874641 = 216712^2 + 298871^2 .

It is a cyclic number.

It is not a de Polignac number, because 136287965585 - 2¹⁴ = 136287949201 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8855417 + ... + 8870793.

It is an arithmetic number, because the mean of its divisors is an integer number (10237665141).

Almost surely, 2^136287965585 is an apocalyptic number.

It is an amenable number.

136287965585 is a deficient number, since it is larger than the sum of its proper divisors (27514676671).

136287965585 is a wasteful number, since it uses less digits than its factorization.

136287965585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18052.

The product of its digits is 108864000, while the sum is 65.

The spelling of 136287965585 in words is "one hundred thirty-six billion, two hundred eighty-seven million, nine hundred sixty-five thousand, five hundred eighty-five".