653968815878596 has 27 divisors (see below), whose sum is σ = 1145085835070541. Its totient is φ = 326801536746384.

The previous prime is 653968815878591. The next prime is 653968815878597. The reversal of 653968815878596 is 695878518869356.

The square root of 653968815878596 is 25572814.

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., 361958656900 + 653606857221696 = 601630^2 + 25565736^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (653968815878591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 181004375686 + ... + 181004379298.

Almost surely, 2^{653968815878596} is an apocalyptic number.

653968815878596 is the 25572814-th square number.

It is an amenable number.

653968815878596 is a deficient number, since it is larger than the sum of its proper divisors (491117019191945).

653968815878596 is an frugal number, since it uses more digits than its factorization.

653968815878596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14308 (or 7154 counting only the distinct ones).

The product of its digits is 188116992000, while the sum is 94.

The spelling of 653968815878596 in words is "six hundred fifty-three trillion, nine hundred sixty-eight billion, eight hundred fifteen million, eight hundred seventy-eight thousand, five hundred ninety-six".