108802485690649 has 27 divisors (see below), whose sum is σ = 116069997747613. Its totient is φ = 101969250872192.

The previous prime is 108802485690637. The next prime is 108802485690697. The reversal of 108802485690649 is 946096584208801.

The square root of 108802485690649 is 10430843.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1971656880649 + 106830828810000 = 1404157^2 + 10335900^2 .

It is not a de Polignac number, because 108802485690649 - 2⁹ = 108802485690137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108802485610649) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 46636297887 + ... + 46636300219.

Almost surely, 2^{108802485690649} is an apocalyptic number.

108802485690649 is the 10430843-rd square number.

108802485690649 is the 5215422-nd centered octagonal number.

It is an amenable number.

108802485690649 is a deficient number, since it is larger than the sum of its proper divisors (7267512056964).

108802485690649 is an frugal number, since it uses more digits than its factorization.

108802485690649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5226 (or 2613 counting only the distinct ones).

The product of its (nonzero) digits is 238878720, while the sum is 70.

The spelling of 108802485690649 in words is "one hundred eight trillion, eight hundred two billion, four hundred eighty-five million, six hundred ninety thousand, six hundred forty-nine".