123796450709 has 4 divisors (see below), whose sum is σ = 123797791104. Its totient is φ = 123795110316.

The previous prime is 123796450681. The next prime is 123796450727. The reversal of 123796450709 is 907054697321.

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, and also an emirpimes, since its reverse is a distinct semiprime: 907054697321 = 299983 ⋅3023687.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123796450709 is a prime.

It is a super-2 number, since 2×123796450709² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123796450409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520517 + ... + 720090.

It is an arithmetic number, because the mean of its divisors is an integer number (30949447776).

Almost surely, 2^123796450709 is an apocalyptic number.

It is an amenable number.

123796450709 is a deficient number, since it is larger than the sum of its proper divisors (1340395).

123796450709 is an equidigital number, since it uses as much as digits as its factorization.

123796450709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340394.

The product of its (nonzero) digits is 2857680, while the sum is 53.

The spelling of 123796450709 in words is "one hundred twenty-three billion, seven hundred ninety-six million, four hundred fifty thousand, seven hundred nine".