36661392533 has 2 divisors, whose sum is σ = 36661392534. Its totient is φ = 36661392532.

The previous prime is 36661392503. The next prime is 36661392611. The reversal of 36661392533 is 33529316663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32339907889 + 4321484644 = 179833^2 + 65738^2 .

It is a cyclic number.

It is not a de Polignac number, because 36661392533 - 2⁸ = 36661392277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36661392503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18330696266 + 18330696267.

It is an arithmetic number, because the mean of its divisors is an integer number (18330696267).

Almost surely, 2^36661392533 is an apocalyptic number.

It is an amenable number.

36661392533 is a deficient number, since it is larger than the sum of its proper divisors (1).

36661392533 is an equidigital number, since it uses as much as digits as its factorization.

36661392533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1574640, while the sum is 47.

The spelling of 36661392533 in words is "thirty-six billion, six hundred sixty-one million, three hundred ninety-two thousand, five hundred thirty-three".