68460995581456 has 15 divisors (see below), whose sum is σ = 132643243063501. Its totient is φ = 34230481242496.

The previous prime is 68460995581427. The next prime is 68460995581493. The reversal of 68460995581456 is 65418559906486.

The square root of 68460995581456 is 8274116.

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., 262467683856 + 68198527897600 = 512316^2 + 8258240^2 .

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, 32062200 + ... + 34130728.

Almost surely, 2^{68460995581456} is an apocalyptic number.

68460995581456 is the 8274116-th square number.

It is an amenable number.

68460995581456 is a deficient number, since it is larger than the sum of its proper divisors (64182247482045).

68460995581456 is an frugal number, since it uses more digits than its factorization.

68460995581456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4137066 (or 2068531 counting only the distinct ones).

The product of its (nonzero) digits is 2239488000, while the sum is 76.

The spelling of 68460995581456 in words is "sixty-eight trillion, four hundred sixty billion, nine hundred ninety-five million, five hundred eighty-one thousand, four hundred fifty-six".