2163217340944 has 45 divisors (see below), whose sum is σ = 4607030952111. Its totient is φ = 983251193760.

The previous prime is 2163217340897. The next prime is 2163217340951. The reversal of 2163217340944 is 4490437123612.

The square root of 2163217340944 is 1470788.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×2163217340944² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2163217340894 and 2163217340903.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 64697959 + ... + 64731385.

Almost surely, 2^{2163217340944} is an apocalyptic number.

2163217340944 is the 1470788-th square number.

It is an amenable number.

2163217340944 is an abundant number, since it is smaller than the sum of its proper divisors (2443813611167).

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

2163217340944 is an frugal number, since it uses more digits than its factorization.

2163217340944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66884 (or 33440 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 46.

The spelling of 2163217340944 in words is "two trillion, one hundred sixty-three billion, two hundred seventeen million, three hundred forty thousand, nine hundred forty-four".