36564665647 has 2 divisors, whose sum is σ = 36564665648. Its totient is φ = 36564665646.

The previous prime is 36564665609. The next prime is 36564665681. The reversal of 36564665647 is 74656646563.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (74656646563) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36564665647 - 2¹⁵ = 36564632879 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 36564665591 and 36564665600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36564662647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18282332823 + 18282332824.

It is an arithmetic number, because the mean of its divisors is an integer number (18282332824).

Almost surely, 2^36564665647 is an apocalyptic number.

36564665647 is a deficient number, since it is larger than the sum of its proper divisors (1).

36564665647 is an equidigital number, since it uses as much as digits as its factorization.

36564665647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65318400, while the sum is 58.

The spelling of 36564665647 in words is "thirty-six billion, five hundred sixty-four million, six hundred sixty-five thousand, six hundred forty-seven".