68593705216 has 27 divisors (see below), whose sum is σ = 136927831341. Its totient is φ = 34294757376.

The previous prime is 68593705199. The next prime is 68593705223. The reversal of 68593705216 is 61250739586.

The square root of 68593705216 is 261904.

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

It can be written as a sum of positive squares in only one way, i.e., 21522063616 + 47071641600 = 146704^2 + 216960^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4182280 + ... + 4198648.

Almost surely, 2^68593705216 is an apocalyptic number.

68593705216 is the 261904-th square number.

It is an amenable number.

68593705216 is a deficient number, since it is larger than the sum of its proper divisors (68334126125).

68593705216 is an frugal number, since it uses more digits than its factorization.

68593705216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32754 (or 16371 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 68593705216 in words is "sixty-eight billion, five hundred ninety-three million, seven hundred five thousand, two hundred sixteen".