123528951860 has 24 divisors (see below), whose sum is σ = 259939151136. Its totient is φ = 49310942240.

The previous prime is 123528951859. The next prime is 123528951913. The reversal of 123528951860 is 68159825321.

It is a junction number, because it is equal to n+sod(n) for n = 123528951799 and 123528951808.

It is a congruent number.

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, 6279842 + ... + 6299481.

It is an arithmetic number, because the mean of its divisors is an integer number (10830797964).

Almost surely, 2^123528951860 is an apocalyptic number.

123528951860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123528951860 is an abundant number, since it is smaller than the sum of its proper divisors (136410199276).

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

123528951860 is a wasteful number, since it uses less digits than its factorization.

123528951860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12579823 (or 12579821 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 50.

The spelling of 123528951860 in words is "one hundred twenty-three billion, five hundred twenty-eight million, nine hundred fifty-one thousand, eight hundred sixty".