136787993066 has 8 divisors (see below), whose sum is σ = 205732076484. Its totient is φ = 68210634240.

The previous prime is 136787993011. The next prime is 136787993077. The reversal of 136787993066 is 660399787631.

It can be written as a sum of positive squares in 2 ways, for example, as 131707297225 + 5080695841 = 362915^2 + 71279^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 136787992993 and 136787993011.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91680215 + ... + 91681706.

Almost surely, 2^136787993066 is an apocalyptic number.

136787993066 is a deficient number, since it is larger than the sum of its proper divisors (68944083418).

136787993066 is a wasteful number, since it uses less digits than its factorization.

136787993066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183362296.

The product of its (nonzero) digits is 61725888, while the sum is 65.

The spelling of 136787993066 in words is "one hundred thirty-six billion, seven hundred eighty-seven million, nine hundred ninety-three thousand, sixty-six".