36631091797 has 2 divisors, whose sum is σ = 36631091798. Its totient is φ = 36631091796.

The previous prime is 36631091773. The next prime is 36631091801. The reversal of 36631091797 is 79719013663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36248732881 + 382358916 = 190391^2 + 19554^2 .

It is a cyclic number.

It is not a de Polignac number, because 36631091797 - 2¹¹ = 36631089749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36631091597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18315545898 + 18315545899.

It is an arithmetic number, because the mean of its divisors is an integer number (18315545899).

Almost surely, 2^36631091797 is an apocalyptic number.

It is an amenable number.

36631091797 is a deficient number, since it is larger than the sum of its proper divisors (1).

36631091797 is an equidigital number, since it uses as much as digits as its factorization.

36631091797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1285956, while the sum is 52.

The spelling of 36631091797 in words is "thirty-six billion, six hundred thirty-one million, ninety-one thousand, seven hundred ninety-seven".