163442346131440 has 160 divisors (see below), whose sum is σ = 408999693772800. Its totient is φ = 60558332590080.

The previous prime is 163442346131431. The next prime is 163442346131489. The reversal of 163442346131440 is 44131643244361.

It is a congruent number.

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, 5760900 + ... + 18975580.

It is an arithmetic number, because the mean of its divisors is an integer number (2556248086080).

Almost surely, 2^{163442346131440} is an apocalyptic number.

163442346131440 is a gapful number since it is divisible by the number (10) 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 163442346131440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204499846886400).

163442346131440 is an abundant number, since it is smaller than the sum of its proper divisors (245557347641360).

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

163442346131440 is a wasteful number, since it uses less digits than its factorization.

163442346131440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13214895 (or 13214889 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 46.

The spelling of 163442346131440 in words is "one hundred sixty-three trillion, four hundred forty-two billion, three hundred forty-six million, one hundred thirty-one thousand, four hundred forty".