68465893945744 has 45 divisors (see below), whose sum is σ = 132996957415777. Its totient is φ = 34144328020352.

The previous prime is 68465893945721. The next prime is 68465893945759. The reversal of 68465893945744 is 44754939856486.

The square root of 68465893945744 is 8274412.

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., 29761170944400 + 38704723001344 = 5455380^2 + 6221312^2 .

It is a Smith number, since the sum of its digits (82) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 13867912044 + ... + 13867916980.

Almost surely, 2^{68465893945744} is an apocalyptic number.

68465893945744 is the 8274412-nd square number.

It is an amenable number.

68465893945744 is a deficient number, since it is larger than the sum of its proper divisors (64531063470033).

68465893945744 is an frugal number, since it uses more digits than its factorization.

68465893945744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10720 (or 5358 counting only the distinct ones).

The product of its digits is 25082265600, while the sum is 82.

The spelling of 68465893945744 in words is "sixty-eight trillion, four hundred sixty-five billion, eight hundred ninety-three million, nine hundred forty-five thousand, seven hundred forty-four".