36668186661 has 16 divisors (see below), whose sum is σ = 51641722880. Its totient is φ = 23106731760.

The previous prime is 36668186657. The next prime is 36668186689. The reversal of 36668186661 is 16668186663.

It is not a de Polignac number, because 36668186661 - 2² = 36668186657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36668186561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4580671 + ... + 4588668.

It is an arithmetic number, because the mean of its divisors is an integer number (3227607680).

Almost surely, 2^36668186661 is an apocalyptic number.

36668186661 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

36668186661 is a deficient number, since it is larger than the sum of its proper divisors (14973536219).

36668186661 is a wasteful number, since it uses less digits than its factorization.

36668186661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9169416.

The product of its digits is 8957952, while the sum is 57.

The spelling of 36668186661 in words is "thirty-six billion, six hundred sixty-eight million, one hundred eighty-six thousand, six hundred sixty-one".