36850185001991 has 2 divisors, whose sum is σ = 36850185001992. Its totient is φ = 36850185001990.

The previous prime is 36850185001969. The next prime is 36850185002011. The reversal of 36850185001991 is 19910058105863.

36850185001991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (19910058105863) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36850185001991 is a prime.

It is a super-2 number, since 2×36850185001991² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36850185001391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18425092500995 + 18425092500996.

It is an arithmetic number, because the mean of its divisors is an integer number (18425092500996).

Almost surely, 2^{36850185001991} is an apocalyptic number.

36850185001991 is a deficient number, since it is larger than the sum of its proper divisors (1).

36850185001991 is an equidigital number, since it uses as much as digits as its factorization.

36850185001991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2332800, while the sum is 56.

The spelling of 36850185001991 in words is "thirty-six trillion, eight hundred fifty billion, one hundred eighty-five million, one thousand, nine hundred ninety-one".