123534105560 has 32 divisors (see below), whose sum is σ = 280817228160. Its totient is φ = 48904221696.

The previous prime is 123534105559. The next prime is 123534105641. The reversal of 123534105560 is 65501435321.

It is a self number, because there is not a number n which added to its sum of digits gives 123534105560.

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, 15915464 + ... + 15923223.

It is an arithmetic number, because the mean of its divisors is an integer number (8775538380).

Almost surely, 2^123534105560 is an apocalyptic number.

123534105560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123534105560 is an abundant number, since it is smaller than the sum of its proper divisors (157283122600).

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

123534105560 is a wasteful number, since it uses less digits than its factorization.

123534105560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31838795 (or 31838791 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 35.

The spelling of 123534105560 in words is "one hundred twenty-three billion, five hundred thirty-four million, one hundred five thousand, five hundred sixty".