36891245903689 has 2 divisors, whose sum is σ = 36891245903690. Its totient is φ = 36891245903688.

The previous prime is 36891245903683. The next prime is 36891245903713. The reversal of 36891245903689 is 98630954219863.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26779590010000 + 10111655893689 = 5174900^2 + 3179883^2 .

It is a cyclic number.

It is not a de Polignac number, because 36891245903689 - 2⁵ = 36891245903657 is a prime.

It is not a weakly prime, because it can be changed into another prime (36891245903683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18445622951844 + 18445622951845.

It is an arithmetic number, because the mean of its divisors is an integer number (18445622951845).

Almost surely, 2^{36891245903689} is an apocalyptic number.

It is an amenable number.

36891245903689 is a deficient number, since it is larger than the sum of its proper divisors (1).

36891245903689 is an equidigital number, since it uses as much as digits as its factorization.

36891245903689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 604661760, while the sum is 73.

The spelling of 36891245903689 in words is "thirty-six trillion, eight hundred ninety-one billion, two hundred forty-five million, nine hundred three thousand, six hundred eighty-nine".