123543556460 has 24 divisors (see below), whose sum is σ = 259448086800. Its totient is φ = 49416161984.

The previous prime is 123543556457. The next prime is 123543556481. The reversal of 123543556460 is 64655345321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1423391 + ... + 1507689.

It is an arithmetic number, because the mean of its divisors is an integer number (10810336950).

Almost surely, 2^123543556460 is an apocalyptic number.

123543556460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123543556460 is an abundant number, since it is smaller than the sum of its proper divisors (135904530340).

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

123543556460 is a wasteful number, since it uses less digits than its factorization.

123543556460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157585 (or 157583 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 44.

The spelling of 123543556460 in words is "one hundred twenty-three billion, five hundred forty-three million, five hundred fifty-six thousand, four hundred sixty".