123417478447 has 2 divisors, whose sum is σ = 123417478448. Its totient is φ = 123417478446.

The previous prime is 123417478433. The next prime is 123417478489. The reversal of 123417478447 is 744874714321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123417478447 - 2²⁷ = 123283260719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123417478394 and 123417478403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123417473447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61708739223 + 61708739224.

It is an arithmetic number, because the mean of its divisors is an integer number (61708739224).

Almost surely, 2^123417478447 is an apocalyptic number.

123417478447 is a deficient number, since it is larger than the sum of its proper divisors (1).

123417478447 is an equidigital number, since it uses as much as digits as its factorization.

123417478447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4214784, while the sum is 52.

The spelling of 123417478447 in words is "one hundred twenty-three billion, four hundred seventeen million, four hundred seventy-eight thousand, four hundred forty-seven".