68147052277 has 2 divisors, whose sum is σ = 68147052278. Its totient is φ = 68147052276.

The previous prime is 68147052271. The next prime is 68147052287. The reversal of 68147052277 is 77225074186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64387032516 + 3760019761 = 253746^2 + 61319^2 .

It is a cyclic number.

It is not a de Polignac number, because 68147052277 - 2¹¹ = 68147050229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68147052277.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68147052271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34073526138 + 34073526139.

It is an arithmetic number, because the mean of its divisors is an integer number (34073526139).

Almost surely, 2^68147052277 is an apocalyptic number.

It is an amenable number.

68147052277 is a deficient number, since it is larger than the sum of its proper divisors (1).

68147052277 is an equidigital number, since it uses as much as digits as its factorization.

68147052277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1317120, while the sum is 49.

The spelling of 68147052277 in words is "sixty-eight billion, one hundred forty-seven million, fifty-two thousand, two hundred seventy-seven".