2172343563 has 64 divisors (see below), whose sum is σ = 3543120000. Its totient is φ = 1307363328.

The previous prime is 2172343561. The next prime is 2172343577. The reversal of 2172343563 is 3653432712.

2172343563 is a `hidden beast` number, since 21 + 72 + 3 + 4 + 3 + 563 = 666.

It is not a de Polignac number, because 2172343563 - 2¹ = 2172343561 is a prime.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (2172343561) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3817543 + ... + 3818111.

It is an arithmetic number, because the mean of its divisors is an integer number (55361250).

Almost surely, 2^2172343563 is an apocalyptic number.

2172343563 is a deficient number, since it is larger than the sum of its proper divisors (1370776437).

2172343563 is a wasteful number, since it uses less digits than its factorization.

2172343563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 807 counting only the distinct ones).

The product of its digits is 90720, while the sum is 36.

The square root of 2172343563 is about 46608.4065700599. The cubic root of 2172343563 is about 1295.1184902736.

The spelling of 2172343563 in words is "two billion, one hundred seventy-two million, three hundred forty-three thousand, five hundred sixty-three".