36550064981 has 2 divisors, whose sum is σ = 36550064982. Its totient is φ = 36550064980.

The previous prime is 36550064963. The next prime is 36550065017. The reversal of 36550064981 is 18946005563.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35807992900 + 742072081 = 189230^2 + 27241^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36550064981 is a prime.

It is a super-2 number, since 2×36550064981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36550064581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18275032490 + 18275032491.

It is an arithmetic number, because the mean of its divisors is an integer number (18275032491).

Almost surely, 2^36550064981 is an apocalyptic number.

It is an amenable number.

36550064981 is a deficient number, since it is larger than the sum of its proper divisors (1).

36550064981 is an equidigital number, since it uses as much as digits as its factorization.

36550064981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 36550064981 in words is "thirty-six billion, five hundred fifty million, sixty-four thousand, nine hundred eighty-one".