123355006572 has 96 divisors (see below), whose sum is σ = 332184061440. Its totient is φ = 34897858560.

The previous prime is 123355006553. The next prime is 123355006597. The reversal of 123355006572 is 275600553321.

It is a self number, because there is not a number n which added to its sum of digits gives 123355006572.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17676748 + ... + 17683724.

It is an arithmetic number, because the mean of its divisors is an integer number (3460250640).

Almost surely, 2^123355006572 is an apocalyptic number.

123355006572 is a gapful number since it is divisible by the number (12) 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 123355006572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166092030720).

123355006572 is an abundant number, since it is smaller than the sum of its proper divisors (208829054868).

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

123355006572 is a wasteful number, since it uses less digits than its factorization.

123355006572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9031 (or 9029 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 39.

Adding to 123355006572 its reverse (275600553321), we get a palindrome (398955559893).

The spelling of 123355006572 in words is "one hundred twenty-three billion, three hundred fifty-five million, six thousand, five hundred seventy-two".