2171473920000 has 3200 divisors, whose sum is σ = 10701716604480. Its totient is φ = 424673280000.

The previous prime is 2171473919999. The next prime is 2171473920023. The reversal of 2171473920000 is 293741712.

It is a tau number, because it is divible by the number of its divisors (3200).

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

It is an unprimeable number.

It is a polite number, since it can be written in 199 ways as a sum of consecutive naturals, for example, 127733759992 + ... + 127733760008.

Almost surely, 2^{2171473920000} is an apocalyptic number.

2171473920000 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 2171473920000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5350858302240).

2171473920000 is an abundant number, since it is smaller than the sum of its proper divisors (8530242684480).

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

2171473920000 is an frugal number, since it uses more digits than its factorization.

2171473920000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97 (or 45 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The spelling of 2171473920000 in words is "two trillion, one hundred seventy-one billion, four hundred seventy-three million, nine hundred twenty thousand".