136855280986 has 8 divisors (see below), whose sum is σ = 210831108660. Its totient is φ = 66578244768.

The previous prime is 136855280977. The next prime is 136855280987. The reversal of 136855280986 is 689082558631.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 135999425961 + 855855025 = 368781^2 + 29255^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (136855280987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 924697771 + ... + 924697918.

Almost surely, 2^136855280986 is an apocalyptic number.

136855280986 is a deficient number, since it is larger than the sum of its proper divisors (73975827674).

136855280986 is a wasteful number, since it uses less digits than its factorization.

136855280986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849395728.

The product of its (nonzero) digits is 24883200, while the sum is 61.

The spelling of 136855280986 in words is "one hundred thirty-six billion, eight hundred fifty-five million, two hundred eighty thousand, nine hundred eighty-six".