136408411666 has 8 divisors (see below), whose sum is σ = 204643300284. Its totient is φ = 68193978240.

The previous prime is 136408411631. The next prime is 136408411697. The reversal of 136408411666 is 666114804631.

It can be written as a sum of positive squares in 2 ways, for example, as 82582091641 + 53826320025 = 287371^2 + 232005^2 .

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

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, 5097115 + ... + 5123806.

Almost surely, 2^136408411666 is an apocalyptic number.

136408411666 is a deficient number, since it is larger than the sum of its proper divisors (68234888618).

136408411666 is a wasteful number, since it uses less digits than its factorization.

136408411666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10227596.

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 136408411666 in words is "one hundred thirty-six billion, four hundred eight million, four hundred eleven thousand, six hundred sixty-six".