2136327663665 has 8 divisors (see below), whose sum is σ = 2760792673128. Its totient is φ = 1577595813120.

The previous prime is 2136327663641. The next prime is 2136327663671. The reversal of 2136327663665 is 5663667236312.

It can be written as a sum of positive squares in 4 ways, for example, as 129311440801 + 2007016222864 = 359599^2 + 1416692^2 .

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

It is not a de Polignac number, because 2136327663665 - 2⁸ = 2136327663409 is a prime.

It is a super-2 number, since 2×2136327663665² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2136327663665.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16433289656 + ... + 16433289785.

It is an arithmetic number, because the mean of its divisors is an integer number (345099084141).

Almost surely, 2^{2136327663665} is an apocalyptic number.

It is an amenable number.

2136327663665 is a deficient number, since it is larger than the sum of its proper divisors (624465009463).

2136327663665 is a wasteful number, since it uses less digits than its factorization.

2136327663665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32866579459.

The product of its digits is 29393280, while the sum is 56.

The spelling of 2136327663665 in words is "two trillion, one hundred thirty-six billion, three hundred twenty-seven million, six hundred sixty-three thousand, six hundred sixty-five".