123830794817 has 4 divisors (see below), whose sum is σ = 131114959236. Its totient is φ = 116546630400.

The previous prime is 123830794811. The next prime is 123830794831. The reversal of 123830794817 is 718497038321.

It is a Cunningham number, because it is equal to 351896²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 718497038321 = 77431 ⋅9279191.

It can be written as a sum of positive squares in 2 ways, for example, as 96407766016 + 27423028801 = 310496^2 + 165599^2 .

It is a cyclic number.

It is not a de Polignac number, because 123830794817 - 2⁸ = 123830794561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123830794811) 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, 3642082184 + ... + 3642082217.

It is an arithmetic number, because the mean of its divisors is an integer number (32778739809).

Almost surely, 2^123830794817 is an apocalyptic number.

123830794817 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

123830794817 is a deficient number, since it is larger than the sum of its proper divisors (7284164419).

123830794817 is an equidigital number, since it uses as much as digits as its factorization.

123830794817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7284164418.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The spelling of 123830794817 in words is "one hundred twenty-three billion, eight hundred thirty million, seven hundred ninety-four thousand, eight hundred seventeen".