36699645887 has 2 divisors, whose sum is σ = 36699645888. Its totient is φ = 36699645886.

The previous prime is 36699645811. The next prime is 36699645889. The reversal of 36699645887 is 78854699663.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 36699645887 - 2¹² = 36699641791 is a prime.

Together with 36699645889, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 36699645887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36699645889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18349822943 + 18349822944.

It is an arithmetic number, because the mean of its divisors is an integer number (18349822944).

Almost surely, 2^36699645887 is an apocalyptic number.

36699645887 is a deficient number, since it is larger than the sum of its proper divisors (1).

36699645887 is an equidigital number, since it uses as much as digits as its factorization.

36699645887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 470292480, while the sum is 71.

The spelling of 36699645887 in words is "thirty-six billion, six hundred ninety-nine million, six hundred forty-five thousand, eight hundred eighty-seven".