2191903183680 has 448 divisors, whose sum is σ = 8128260096000. Its totient is φ = 490113441792.

The previous prime is 2191903183663. The next prime is 2191903183693. The reversal of 2191903183680 is 863813091912.

It is a tau number, because it is divible by the number of its divisors (448).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 57846981 + ... + 57884859.

Almost surely, 2^{2191903183680} is an apocalyptic number.

2191903183680 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 2191903183680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4064130048000).

2191903183680 is an abundant number, since it is smaller than the sum of its proper divisors (5936356912320).

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

2191903183680 is a wasteful number, since it uses less digits than its factorization.

2191903183680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38094 (or 38084 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 51.

The spelling of 2191903183680 in words is "two trillion, one hundred ninety-one billion, nine hundred three million, one hundred eighty-three thousand, six hundred eighty".