2173512568 has 8 divisors (see below), whose sum is σ = 4075336080. Its totient is φ = 1086756280.

The previous prime is 2173512557. The next prime is 2173512587. The reversal of 2173512568 is 8652153712.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2173512568.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135844528 + ... + 135844543.

It is an arithmetic number, because the mean of its divisors is an integer number (509417010).

Almost surely, 2^2173512568 is an apocalyptic number.

It is an amenable number.

2173512568 is a deficient number, since it is larger than the sum of its proper divisors (1901823512).

2173512568 is a wasteful number, since it uses less digits than its factorization.

2173512568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271689077 (or 271689073 counting only the distinct ones).

The product of its digits is 100800, while the sum is 40.

The square root of 2173512568 is about 46620.9455931559. The cubic root of 2173512568 is about 1295.3507630014.

The spelling of 2173512568 in words is "two billion, one hundred seventy-three million, five hundred twelve thousand, five hundred sixty-eight".