68274730061 has 2 divisors, whose sum is σ = 68274730062. Its totient is φ = 68274730060.

The previous prime is 68274730003. The next prime is 68274730157. The reversal of 68274730061 is 16003747286.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66496421161 + 1778308900 = 257869^2 + 42170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68274730061 is a prime.

It is a super-2 number, since 2×68274730061² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68274729994 and 68274730021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68274730261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34137365030 + 34137365031.

It is an arithmetic number, because the mean of its divisors is an integer number (34137365031).

Almost surely, 2^68274730061 is an apocalyptic number.

It is an amenable number.

68274730061 is a deficient number, since it is larger than the sum of its proper divisors (1).

68274730061 is an equidigital number, since it uses as much as digits as its factorization.

68274730061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 68274730061 in words is "sixty-eight billion, two hundred seventy-four million, seven hundred thirty thousand, sixty-one".