36006639923 has 2 divisors, whose sum is σ = 36006639924. Its totient is φ = 36006639922.

The previous prime is 36006639899. The next prime is 36006639983. The reversal of 36006639923 is 32993660063.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 36006639923 - 2¹² = 36006635827 is a prime.

It is not a weakly prime, because it can be changed into another prime (36006639983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18003319961 + 18003319962.

It is an arithmetic number, because the mean of its divisors is an integer number (18003319962).

Almost surely, 2^36006639923 is an apocalyptic number.

36006639923 is a deficient number, since it is larger than the sum of its proper divisors (1).

36006639923 is an equidigital number, since it uses as much as digits as its factorization.

36006639923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 944784, while the sum is 47.

The spelling of 36006639923 in words is "thirty-six billion, six million, six hundred thirty-nine thousand, nine hundred twenty-three".