36321599987 has 2 divisors, whose sum is σ = 36321599988. Its totient is φ = 36321599986.

The previous prime is 36321599981. The next prime is 36321600041. The reversal of 36321599987 is 78999512363.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 36321599987 - 2²⁶ = 36254491123 is a prime.

It is not a weakly prime, because it can be changed into another prime (36321599981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18160799993 + 18160799994.

It is an arithmetic number, because the mean of its divisors is an integer number (18160799994).

Almost surely, 2^36321599987 is an apocalyptic number.

36321599987 is a deficient number, since it is larger than the sum of its proper divisors (1).

36321599987 is an equidigital number, since it uses as much as digits as its factorization.

36321599987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22044960, while the sum is 62.

The spelling of 36321599987 in words is "thirty-six billion, three hundred twenty-one million, five hundred ninety-nine thousand, nine hundred eighty-seven".