123708723580 has 192 divisors, whose sum is σ = 308862626688. Its totient is φ = 41194782720.

The previous prime is 123708723559. The next prime is 123708723599. The reversal of 123708723580 is 85327807321.

It is a self number, because there is not a number n which added to its sum of digits gives 123708723580.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10067040 + ... + 10079320.

It is an arithmetic number, because the mean of its divisors is an integer number (1608659514).

Almost surely, 2^123708723580 is an apocalyptic number.

123708723580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123708723580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154431313344).

123708723580 is an abundant number, since it is smaller than the sum of its proper divisors (185153903108).

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

123708723580 is a wasteful number, since it uses less digits than its factorization.

123708723580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12416 (or 12414 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 123708723580 in words is "one hundred twenty-three billion, seven hundred eight million, seven hundred twenty-three thousand, five hundred eighty".