123447172608 has 480 divisors, whose sum is σ = 382294969056. Its totient is φ = 39749419008.

The previous prime is 123447172603. The next prime is 123447172633. The reversal of 123447172608 is 806271744321.

123447172608 is a `hidden beast` number, since 1 + 2 + 34 + 4 + 7 + 1 + 7 + 2 + 608 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123447172603) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 639622560 + ... + 639622752.

Almost surely, 2^123447172608 is an apocalyptic number.

123447172608 is a gapful number since it is divisible by the number (18) 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 123447172608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191147484528).

123447172608 is an abundant number, since it is smaller than the sum of its proper divisors (258847796448).

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

123447172608 is an frugal number, since it uses more digits than its factorization.

123447172608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376 (or 348 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 123447172608 in words is "one hundred twenty-three billion, four hundred forty-seven million, one hundred seventy-two thousand, six hundred eight".