36678793229581 has 2 divisors, whose sum is σ = 36678793229582. Its totient is φ = 36678793229580.

The previous prime is 36678793229537. The next prime is 36678793229651. The reversal of 36678793229581 is 18592239787663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34357768402500 + 2321024827081 = 5861550^2 + 1523491^2 .

It is an emirp because it is prime and its reverse (18592239787663) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36678793229581 - 2⁹ = 36678793229069 is a prime.

It is a super-2 number, since 2×36678793229581² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 36678793229498 and 36678793229507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36678793229681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18339396614790 + 18339396614791.

It is an arithmetic number, because the mean of its divisors is an integer number (18339396614791).

Almost surely, 2^{36678793229581} is an apocalyptic number.

It is an amenable number.

36678793229581 is a deficient number, since it is larger than the sum of its proper divisors (1).

36678793229581 is an equidigital number, since it uses as much as digits as its factorization.

36678793229581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1646023680, while the sum is 76.

The spelling of 36678793229581 in words is "thirty-six trillion, six hundred seventy-eight billion, seven hundred ninety-three million, two hundred twenty-nine thousand, five hundred eighty-one".