68067701477 has 2 divisors, whose sum is σ = 68067701478. Its totient is φ = 68067701476.

The previous prime is 68067701467. The next prime is 68067701483. The reversal of 68067701477 is 77410776086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56705420641 + 11362280836 = 238129^2 + 106594^2 .

It is a cyclic number.

It is not a de Polignac number, because 68067701477 - 2⁴ = 68067701461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68067701447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34033850738 + 34033850739.

It is an arithmetic number, because the mean of its divisors is an integer number (34033850739).

Almost surely, 2^68067701477 is an apocalyptic number.

It is an amenable number.

68067701477 is a deficient number, since it is larger than the sum of its proper divisors (1).

68067701477 is an equidigital number, since it uses as much as digits as its factorization.

68067701477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2765952, while the sum is 53.

The spelling of 68067701477 in words is "sixty-eight billion, sixty-seven million, seven hundred one thousand, four hundred seventy-seven".