2166019025280 has 576 divisors, whose sum is σ = 8061813098640. Its totient is φ = 494192230400.

The previous prime is 2166019025273. The next prime is 2166019025309. The reversal of 2166019025280 is 825209106612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 67124350 + ... + 67156610.

Almost surely, 2^{2166019025280} is an apocalyptic number.

2166019025280 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 2166019025280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4030906549320).

2166019025280 is an abundant number, since it is smaller than the sum of its proper divisors (5895794073360).

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

2166019025280 is a wasteful number, since it uses less digits than its factorization.

2166019025280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32339 (or 32299 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 2166019025280 in words is "two trillion, one hundred sixty-six billion, nineteen million, twenty-five thousand, two hundred eighty".