2161173604480 has 192 divisors, whose sum is σ = 5925856708800. Its totient is φ = 751711938560.

The previous prime is 2161173604459. The next prime is 2161173604483. The reversal of 2161173604480 is 844063711612.

It is not an unprimeable number, because it can be changed into a prime (2161173604483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1174431 + ... + 2387809.

It is an arithmetic number, because the mean of its divisors is an integer number (30863837025).

Almost surely, 2^{2161173604480} is an apocalyptic number.

2161173604480 is a gapful number since it is divisible by the number (20) 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 2161173604480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2962928354400).

2161173604480 is an abundant number, since it is smaller than the sum of its proper divisors (3764683104320).

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

2161173604480 is a wasteful number, since it uses less digits than its factorization.

2161173604480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213443 (or 1213420 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 2161173604480 in words is "two trillion, one hundred sixty-one billion, one hundred seventy-three million, six hundred four thousand, four hundred eighty".