36561043542157 has 2 divisors, whose sum is σ = 36561043542158. Its totient is φ = 36561043542156.

The previous prime is 36561043542139. The next prime is 36561043542181. The reversal of 36561043542157 is 75124534016563.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32665922898921 + 3895120643236 = 5715411^2 + 1973606^2 .

It is a cyclic number.

It is not a de Polignac number, because 36561043542157 - 2⁴³ = 27764950519949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36561043540157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18280521771078 + 18280521771079.

It is an arithmetic number, because the mean of its divisors is an integer number (18280521771079).

Almost surely, 2^{36561043542157} is an apocalyptic number.

It is an amenable number.

36561043542157 is a deficient number, since it is larger than the sum of its proper divisors (1).

36561043542157 is an equidigital number, since it uses as much as digits as its factorization.

36561043542157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072000, while the sum is 52.

The spelling of 36561043542157 in words is "thirty-six trillion, five hundred sixty-one billion, forty-three million, five hundred forty-two thousand, one hundred fifty-seven".