36681836693497 has 2 divisors, whose sum is σ = 36681836693498. Its totient is φ = 36681836693496.

The previous prime is 36681836693429. The next prime is 36681836693519. The reversal of 36681836693497 is 79439663818663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22563060503481 + 14118776190016 = 4750059^2 + 3757496^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36681836693497 is a prime.

It is not a weakly prime, because it can be changed into another prime (36681836693417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18340918346748 + 18340918346749.

It is an arithmetic number, because the mean of its divisors is an integer number (18340918346749).

Almost surely, 2^{36681836693497} is an apocalyptic number.

It is an amenable number.

36681836693497 is a deficient number, since it is larger than the sum of its proper divisors (1).

36681836693497 is an equidigital number, since it uses as much as digits as its factorization.

36681836693497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5079158784, while the sum is 79.

The spelling of 36681836693497 in words is "thirty-six trillion, six hundred eighty-one billion, eight hundred thirty-six million, six hundred ninety-three thousand, four hundred ninety-seven".