163780008099840 has 1440 divisors, whose sum is σ = 680105053240704. Its totient is φ = 37367851253760.

The previous prime is 163780008099761. The next prime is 163780008099863. The reversal of 163780008099840 is 48990800087361.

It is a tau number, because it is divible by the number of its divisors (1440).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3722504722 + ... + 3722548718.

Almost surely, 2^{163780008099840} is an apocalyptic number.

163780008099840 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 163780008099840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340052526620352).

163780008099840 is an abundant number, since it is smaller than the sum of its proper divisors (516325045140864).

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

163780008099840 is an equidigital number, since it uses as much as digits as its factorization.

163780008099840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44073 (or 44035 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 63.

The spelling of 163780008099840 in words is "one hundred sixty-three trillion, seven hundred eighty billion, eight million, ninety-nine thousand, eight hundred forty".