108816239257 has 4 divisors (see below), whose sum is σ = 118708624656. Its totient is φ = 98923853860.

The previous prime is 108816239239. The next prime is 108816239261. The reversal of 108816239257 is 752932618801.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108816239257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108816239237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4946192683 + ... + 4946192704.

It is an arithmetic number, because the mean of its divisors is an integer number (29677156164).

Almost surely, 2^108816239257 is an apocalyptic number.

It is an amenable number.

108816239257 is a deficient number, since it is larger than the sum of its proper divisors (9892385399).

108816239257 is an equidigital number, since it uses as much as digits as its factorization.

108816239257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9892385398.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 108816239257 in words is "one hundred eight billion, eight hundred sixteen million, two hundred thirty-nine thousand, two hundred fifty-seven".