104820756709 has 2 divisors, whose sum is σ = 104820756710. Its totient is φ = 104820756708.

The previous prime is 104820756707. The next prime is 104820756751. The reversal of 104820756709 is 907657028401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88812940225 + 16007816484 = 298015^2 + 126522^2 .

It is a cyclic number.

It is not a de Polignac number, because 104820756709 - 2¹ = 104820756707 is a prime.

Together with 104820756707, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104820756707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52410378354 + 52410378355.

It is an arithmetic number, because the mean of its divisors is an integer number (52410378355).

Almost surely, 2^104820756709 is an apocalyptic number.

It is an amenable number.

104820756709 is a deficient number, since it is larger than the sum of its proper divisors (1).

104820756709 is an equidigital number, since it uses as much as digits as its factorization.

104820756709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 104820756709 in words is "one hundred four billion, eight hundred twenty million, seven hundred fifty-six thousand, seven hundred nine".