123416517261 has 8 divisors (see below), whose sum is σ = 174235083264. Its totient is φ = 77437814720.

The previous prime is 123416517247. The next prime is 123416517277. The reversal of 123416517261 is 162715614321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123416517261 - 2⁹ = 123416516749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123416517221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1209965805 + ... + 1209965906.

It is an arithmetic number, because the mean of its divisors is an integer number (21779385408).

Almost surely, 2^123416517261 is an apocalyptic number.

It is an amenable number.

123416517261 is a deficient number, since it is larger than the sum of its proper divisors (50818566003).

123416517261 is a wasteful number, since it uses less digits than its factorization.

123416517261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2419931731.

The product of its digits is 60480, while the sum is 39.

The spelling of 123416517261 in words is "one hundred twenty-three billion, four hundred sixteen million, five hundred seventeen thousand, two hundred sixty-one".