123412517180 has 24 divisors (see below), whose sum is σ = 264056218272. Its totient is φ = 48433591232.

The previous prime is 123412517153. The next prime is 123412517201. The reversal of 123412517180 is 81715214321.

It is a self number, because there is not a number n which added to its sum of digits gives 123412517180.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58212392 + ... + 58214511.

It is an arithmetic number, because the mean of its divisors is an integer number (11002342428).

Almost surely, 2^123412517180 is an apocalyptic number.

123412517180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123412517180 is an abundant number, since it is smaller than the sum of its proper divisors (140643701092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123412517180 is a wasteful number, since it uses less digits than its factorization.

123412517180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116426965 (or 116426963 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The spelling of 123412517180 in words is "one hundred twenty-three billion, four hundred twelve million, five hundred seventeen thousand, one hundred eighty".