168448391232 has 224 divisors, whose sum is σ = 531413581824. Its totient is φ = 46492262400.

The previous prime is 168448391213. The next prime is 168448391327. The reversal of 168448391232 is 232193844861.

It is a Harshad number since it is a multiple of its sum of digits (51).

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, 1037353 + ... + 1188695.

Almost surely, 2^168448391232 is an apocalyptic number.

168448391232 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 168448391232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265706790912).

168448391232 is an abundant number, since it is smaller than the sum of its proper divisors (362965190592).

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

168448391232 is a wasteful number, since it uses less digits than its factorization.

168448391232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151417 (or 151407 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 51.

The spelling of 168448391232 in words is "one hundred sixty-eight billion, four hundred forty-eight million, three hundred ninety-one thousand, two hundred thirty-two".