2171903843460 has 48 divisors (see below), whose sum is σ = 6549125438016. Its totient is φ = 534622484352.

The previous prime is 2171903843443. The next prime is 2171903843471. The reversal of 2171903843460 is 643483091712.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1392245274 + ... + 1392246833.

It is an arithmetic number, because the mean of its divisors is an integer number (136440113292).

Almost surely, 2^{2171903843460} is an apocalyptic number.

2171903843460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2171903843460 is an abundant number, since it is smaller than the sum of its proper divisors (4377221594556).

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

2171903843460 is a wasteful number, since it uses less digits than its factorization.

2171903843460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2784492132 (or 2784492130 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 2171903843460 in words is "two trillion, one hundred seventy-one billion, nine hundred three million, eight hundred forty-three thousand, four hundred sixty".