36643047937 has 2 divisors, whose sum is σ = 36643047938. Its totient is φ = 36643047936.

The previous prime is 36643047923. The next prime is 36643047943. The reversal of 36643047937 is 73974034663.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19260998656 + 17382049281 = 138784^2 + 131841^2 .

It is an emirp because it is prime and its reverse (73974034663) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36643047937 - 2²³ = 36634659329 is a prime.

It is a super-2 number, since 2×36643047937² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (36643047907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18321523968 + 18321523969.

It is an arithmetic number, because the mean of its divisors is an integer number (18321523969).

Almost surely, 2^36643047937 is an apocalyptic number.

It is an amenable number.

36643047937 is a deficient number, since it is larger than the sum of its proper divisors (1).

36643047937 is an equidigital number, since it uses as much as digits as its factorization.

36643047937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6858432, while the sum is 52.

The spelling of 36643047937 in words is "thirty-six billion, six hundred forty-three million, forty-seven thousand, nine hundred thirty-seven".