108709784957 has 2 divisors, whose sum is σ = 108709784958. Its totient is φ = 108709784956.

The previous prime is 108709784941. The next prime is 108709784959. The reversal of 108709784957 is 759487907801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105918353401 + 2791431556 = 325451^2 + 52834^2 .

It is a cyclic number.

It is not a de Polignac number, because 108709784957 - 2⁴ = 108709784941 is a prime.

Together with 108709784959, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 108709784893 and 108709784902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108709784959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54354892478 + 54354892479.

It is an arithmetic number, because the mean of its divisors is an integer number (54354892479).

Almost surely, 2^108709784957 is an apocalyptic number.

It is an amenable number.

108709784957 is a deficient number, since it is larger than the sum of its proper divisors (1).

108709784957 is an equidigital number, since it uses as much as digits as its factorization.

108709784957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35562240, while the sum is 65.

The spelling of 108709784957 in words is "one hundred eight billion, seven hundred nine million, seven hundred eighty-four thousand, nine hundred fifty-seven".