108609621137 has 2 divisors, whose sum is σ = 108609621138. Its totient is φ = 108609621136.

The previous prime is 108609621119. The next prime is 108609621161. The reversal of 108609621137 is 731126906801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81745099921 + 26864521216 = 285911^2 + 163904^2 .

It is a cyclic number.

It is not a de Polignac number, because 108609621137 - 2¹⁶ = 108609555601 is a prime.

It is not a weakly prime, because it can be changed into another prime (108609620137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54304810568 + 54304810569.

It is an arithmetic number, because the mean of its divisors is an integer number (54304810569).

Almost surely, 2^108609621137 is an apocalyptic number.

It is an amenable number.

108609621137 is a deficient number, since it is larger than the sum of its proper divisors (1).

108609621137 is an equidigital number, since it uses as much as digits as its factorization.

108609621137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 108609621137 in words is "one hundred eight billion, six hundred nine million, six hundred twenty-one thousand, one hundred thirty-seven".