36688723613 has 2 divisors, whose sum is σ = 36688723614. Its totient is φ = 36688723612.

The previous prime is 36688723559. The next prime is 36688723649. The reversal of 36688723613 is 31632788663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26620206649 + 10068516964 = 163157^2 + 100342^2 .

It is a cyclic number.

It is not a de Polignac number, because 36688723613 - 2¹⁶ = 36688658077 is a prime.

It is a super-2 number, since 2×36688723613² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36688728613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18344361806 + 18344361807.

It is an arithmetic number, because the mean of its divisors is an integer number (18344361807).

Almost surely, 2^36688723613 is an apocalyptic number.

It is an amenable number.

36688723613 is a deficient number, since it is larger than the sum of its proper divisors (1).

36688723613 is an equidigital number, since it uses as much as digits as its factorization.

36688723613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5225472, while the sum is 53.

The spelling of 36688723613 in words is "thirty-six billion, six hundred eighty-eight million, seven hundred twenty-three thousand, six hundred thirteen".