2136131666 has 8 divisors (see below), whose sum is σ = 3204395184. Its totient is φ = 1067999940.

The previous prime is 2136131659. The next prime is 2136131671. The reversal of 2136131666 is 6661316312.

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, 38981 + ... + 76103.

It is an arithmetic number, because the mean of its divisors is an integer number (400549398).

Almost surely, 2^2136131666 is an apocalyptic number.

2136131666 is a deficient number, since it is larger than the sum of its proper divisors (1068263518).

2136131666 is a wasteful number, since it uses less digits than its factorization.

2136131666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65896.

The product of its digits is 23328, while the sum is 35.

The square root of 2136131666 is about 46218.3044474805. The cubic root of 2136131666 is about 1287.8818003133.

Adding to 2136131666 its reverse (6661316312), we get a palindrome (8797447978).

The spelling of 2136131666 in words is "two billion, one hundred thirty-six million, one hundred thirty-one thousand, six hundred sixty-six".