123072231616 has 56 divisors (see below), whose sum is σ = 255855849984. Its totient is φ = 58625952000.

The previous prime is 123072231577. The next prime is 123072231619. The reversal of 123072231616 is 616132270321.

It is not an unprimeable number, because it can be changed into a prime (123072231619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202921 + ... + 536023.

It is an arithmetic number, because the mean of its divisors is an integer number (4568854464).

Almost surely, 2^123072231616 is an apocalyptic number.

123072231616 is a gapful number since it is divisible by the number (16) 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 123072231616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127927924992).

123072231616 is an abundant number, since it is smaller than the sum of its proper divisors (132783618368).

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

123072231616 is a wasteful number, since it uses less digits than its factorization.

123072231616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333389 (or 333379 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The spelling of 123072231616 in words is "one hundred twenty-three billion, seventy-two million, two hundred thirty-one thousand, six hundred sixteen".