36640695397 has 2 divisors, whose sum is σ = 36640695398. Its totient is φ = 36640695396.

The previous prime is 36640695389. The next prime is 36640695419. The reversal of 36640695397 is 79359604663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28185708996 + 8454986401 = 167886^2 + 91951^2 .

It is a cyclic number.

It is not a de Polignac number, because 36640695397 - 2³ = 36640695389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36640695797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18320347698 + 18320347699.

It is an arithmetic number, because the mean of its divisors is an integer number (18320347699).

Almost surely, 2^36640695397 is an apocalyptic number.

It is an amenable number.

36640695397 is a deficient number, since it is larger than the sum of its proper divisors (1).

36640695397 is an equidigital number, since it uses as much as digits as its factorization.

36640695397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22044960, while the sum is 58.

The spelling of 36640695397 in words is "thirty-six billion, six hundred forty million, six hundred ninety-five thousand, three hundred ninety-seven".