36387780641 has 2 divisors, whose sum is σ = 36387780642. Its totient is φ = 36387780640.

The previous prime is 36387780629. The next prime is 36387780739. The reversal of 36387780641 is 14608778363.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35978123041 + 409657600 = 189679^2 + 20240^2 .

It is an emirp because it is prime and its reverse (14608778363) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36387780641 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (36380780641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18193890320 + 18193890321.

It is an arithmetic number, because the mean of its divisors is an integer number (18193890321).

Almost surely, 2^36387780641 is an apocalyptic number.

It is an amenable number.

36387780641 is a deficient number, since it is larger than the sum of its proper divisors (1).

36387780641 is an equidigital number, since it uses as much as digits as its factorization.

36387780641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4064256, while the sum is 53.

The spelling of 36387780641 in words is "thirty-six billion, three hundred eighty-seven million, seven hundred eighty thousand, six hundred forty-one".