36549138257 has 2 divisors, whose sum is σ = 36549138258. Its totient is φ = 36549138256.

The previous prime is 36549138211. The next prime is 36549138331. The reversal of 36549138257 is 75283194563.

It is a happy number.

36549138257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36508127041 + 41011216 = 191071^2 + 6404^2 .

It is an emirp because it is prime and its reverse (75283194563) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36549138257 - 2³⁰ = 35475396433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 36549138199 and 36549138208.

It is not a weakly prime, because it can be changed into another prime (36549138557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18274569128 + 18274569129.

It is an arithmetic number, because the mean of its divisors is an integer number (18274569129).

Almost surely, 2^36549138257 is an apocalyptic number.

It is an amenable number.

36549138257 is a deficient number, since it is larger than the sum of its proper divisors (1).

36549138257 is an equidigital number, since it uses as much as digits as its factorization.

36549138257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5443200, while the sum is 53.

The spelling of 36549138257 in words is "thirty-six billion, five hundred forty-nine million, one hundred thirty-eight thousand, two hundred fifty-seven".