108187708549 has 2 divisors, whose sum is σ = 108187708550. Its totient is φ = 108187708548.

The previous prime is 108187708543. The next prime is 108187708571. The reversal of 108187708549 is 945807781801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102235586049 + 5952122500 = 319743^2 + 77150^2 .

It is a cyclic number.

It is not a de Polignac number, because 108187708549 - 2²¹ = 108185611397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 108187708493 and 108187708502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108187708543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54093854274 + 54093854275.

It is an arithmetic number, because the mean of its divisors is an integer number (54093854275).

Almost surely, 2^108187708549 is an apocalyptic number.

It is an amenable number.

108187708549 is a deficient number, since it is larger than the sum of its proper divisors (1).

108187708549 is an equidigital number, since it uses as much as digits as its factorization.

108187708549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4515840, while the sum is 58.

The spelling of 108187708549 in words is "one hundred eight billion, one hundred eighty-seven million, seven hundred eight thousand, five hundred forty-nine".