68348186305 has 12 divisors (see below), whose sum is σ = 95408488980. Its totient is φ = 46867327584.

The previous prime is 68348186287. The next prime is 68348186321. The reversal of 68348186305 is 50368184386.

It can be written as a sum of positive squares in 2 ways, for example, as 29489132176 + 38859054129 = 171724^2 + 197127^2 .

It is not a de Polignac number, because 68348186305 - 2⁵ = 68348186273 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139485850 + ... + 139486339.

It is an arithmetic number, because the mean of its divisors is an integer number (7950707415).

Almost surely, 2^68348186305 is an apocalyptic number.

It is an amenable number.

68348186305 is a deficient number, since it is larger than the sum of its proper divisors (27060302675).

68348186305 is a wasteful number, since it uses less digits than its factorization.

68348186305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278972208 (or 278972201 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 52.

The spelling of 68348186305 in words is "sixty-eight billion, three hundred forty-eight million, one hundred eighty-six thousand, three hundred five".