68617278601 has 9 divisors (see below), whose sum is σ = 70342700053. Its totient is φ = 66933208480.

The previous prime is 68617278599. The next prime is 68617278607. The reversal of 68617278601 is 10687271686.

The square root of 68617278601 is 261949.

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

It can be written as a sum of positive squares in 4 ways, for example, as 63579118201 + 5038160400 = 252149^2 + 70980^2 .

It is not a de Polignac number, because 68617278601 - 2¹ = 68617278599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68617278607) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10736715 + ... + 10743103.

Almost surely, 2^68617278601 is an apocalyptic number.

68617278601 is the 261949-th square number.

68617278601 is the 130975-th centered octagonal number.

It is an amenable number.

68617278601 is a deficient number, since it is larger than the sum of its proper divisors (1725421452).

68617278601 is an frugal number, since it uses more digits than its factorization.

68617278601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12860 (or 6430 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 68617278601 in words is "sixty-eight billion, six hundred seventeen million, two hundred seventy-eight thousand, six hundred one".