2163522715844 has 24 divisors (see below), whose sum is σ = 4358629712640. Its totient is φ = 920455960896.

The previous prime is 2163522715843. The next prime is 2163522715847. The reversal of 2163522715844 is 4485172253612.

It is a junction number, because it is equal to n+sod(n) for n = 2163522715792 and 2163522715801.

It is not an unprimeable number, because it can be changed into a prime (2163522715843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281998604 + ... + 282006275.

It is an arithmetic number, because the mean of its divisors is an integer number (181609571360).

Almost surely, 2^{2163522715844} is an apocalyptic number.

It is an amenable number.

2163522715844 is an abundant number, since it is smaller than the sum of its proper divisors (2195106996796).

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

2163522715844 is a wasteful number, since it uses less digits than its factorization.

2163522715844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564005027 (or 564005025 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 50.

The spelling of 2163522715844 in words is "two trillion, one hundred sixty-three billion, five hundred twenty-two million, seven hundred fifteen thousand, eight hundred forty-four".