2172019543564 has 24 divisors (see below), whose sum is σ = 4093509470400. Its totient is φ = 1002449001984.

The previous prime is 2172019543541. The next prime is 2172019543601. The reversal of 2172019543564 is 4653459102712.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2133852 + ... + 2982844.

It is an arithmetic number, because the mean of its divisors is an integer number (170562894600).

Almost surely, 2^{2172019543564} is an apocalyptic number.

It is an amenable number.

2172019543564 is a deficient number, since it is larger than the sum of its proper divisors (1921489926836).

2172019543564 is a wasteful number, since it uses less digits than its factorization.

2172019543564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898209 (or 898207 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 2172019543564 in words is "two trillion, one hundred seventy-two billion, nineteen million, five hundred forty-three thousand, five hundred sixty-four".