123589658120 has 16 divisors (see below), whose sum is σ = 278076730860. Its totient is φ = 49435863232.

The previous prime is 123589658119. The next prime is 123589658167. The reversal of 123589658120 is 21856985321.

It can be written as a sum of positive squares in 2 ways, for example, as 104694956356 + 18894701764 = 323566^2 + 137458^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1544870687 + ... + 1544870766.

Almost surely, 2^123589658120 is an apocalyptic number.

123589658120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123589658120 is an abundant number, since it is smaller than the sum of its proper divisors (154487072740).

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

123589658120 is a wasteful number, since it uses less digits than its factorization.

123589658120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3089741464 (or 3089741460 counting only the distinct ones).

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

The spelling of 123589658120 in words is "one hundred twenty-three billion, five hundred eighty-nine million, six hundred fifty-eight thousand, one hundred twenty".