36634985857 has 2 divisors, whose sum is σ = 36634985858. Its totient is φ = 36634985856.

The previous prime is 36634985819. The next prime is 36634985887. The reversal of 36634985857 is 75858943663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28434053376 + 8200932481 = 168624^2 + 90559^2 .

It is a cyclic number.

It is not a de Polignac number, because 36634985857 - 2³¹ = 34487502209 is a prime.

It is not a weakly prime, because it can be changed into another prime (36634985887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18317492928 + 18317492929.

It is an arithmetic number, because the mean of its divisors is an integer number (18317492929).

Almost surely, 2^36634985857 is an apocalyptic number.

It is an amenable number.

36634985857 is a deficient number, since it is larger than the sum of its proper divisors (1).

36634985857 is an equidigital number, since it uses as much as digits as its factorization.

36634985857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 130636800, while the sum is 64.

The spelling of 36634985857 in words is "thirty-six billion, six hundred thirty-four million, nine hundred eighty-five thousand, eight hundred fifty-seven".