123416517247 has 2 divisors, whose sum is σ = 123416517248. Its totient is φ = 123416517246.

The previous prime is 123416517241. The next prime is 123416517277. The reversal of 123416517247 is 742715614321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123416517247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123416517241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61708258623 + 61708258624.

It is an arithmetic number, because the mean of its divisors is an integer number (61708258624).

Almost surely, 2^123416517247 is an apocalyptic number.

123416517247 is a deficient number, since it is larger than the sum of its proper divisors (1).

123416517247 is an equidigital number, since it uses as much as digits as its factorization.

123416517247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 43.

The spelling of 123416517247 in words is "one hundred twenty-three billion, four hundred sixteen million, five hundred seventeen thousand, two hundred forty-seven".