123481720672 has 192 divisors, whose sum is σ = 272142581760. Its totient is φ = 54925516800.

The previous prime is 123481720669. The next prime is 123481720673. The reversal of 123481720672 is 276027184321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123481720673) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 285176968 + ... + 285177400.

It is an arithmetic number, because the mean of its divisors is an integer number (1417409280).

Almost surely, 2^123481720672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123481720672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136071290880).

123481720672 is an abundant number, since it is smaller than the sum of its proper divisors (148660861088).

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

123481720672 is a wasteful number, since it uses less digits than its factorization.

123481720672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957 (or 949 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 123481720672 in words is "one hundred twenty-three billion, four hundred eighty-one million, seven hundred twenty thousand, six hundred seventy-two".