161215488000 has 1792 divisors, whose sum is σ = 736055424000. Its totient is φ = 34681651200.

The previous prime is 161215487963. The next prime is 161215488013. The reversal of 161215488000 is 884512161.

161215488000 is a `hidden beast` number, since 16 + 1 + 21 + 548 + 80 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1792).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 9483263992 + ... + 9483264008.

Almost surely, 2^161215488000 is an apocalyptic number.

161215488000 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 161215488000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368027712000).

161215488000 is an abundant number, since it is smaller than the sum of its proper divisors (574839936000).

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

161215488000 is an frugal number, since it uses more digits than its factorization.

161215488000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The spelling of 161215488000 in words is "one hundred sixty-one billion, two hundred fifteen million, four hundred eighty-eight thousand".