36866666687 has 2 divisors, whose sum is σ = 36866666688. Its totient is φ = 36866666686.

The previous prime is 36866666593. The next prime is 36866666699. The reversal of 36866666687 is 78666666863.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 36866666687 - 2²⁴ = 36849889471 is a prime.

It is a super-2 number, since 2×36866666687² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36866660687) by changing a digit.

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 as a sum of consecutive naturals, namely, 18433333343 + 18433333344.

It is an arithmetic number, because the mean of its divisors is an integer number (18433333344).

Almost surely, 2^36866666687 is an apocalyptic number.

36866666687 is a deficient number, since it is larger than the sum of its proper divisors (1).

36866666687 is an equidigital number, since it uses as much as digits as its factorization.

36866666687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376233984, while the sum is 68.

The spelling of 36866666687 in words is "thirty-six billion, eight hundred sixty-six million, six hundred sixty-six thousand, six hundred eighty-seven".