77218425341 has 2 divisors, whose sum is σ = 77218425342. Its totient is φ = 77218425340.

The previous prime is 77218425223. The next prime is 77218425359. The reversal of 77218425341 is 14352481277.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77198399716 + 20025625 = 277846^2 + 4475^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77218425341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77218425292 and 77218425301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77218425391) 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, 38609212670 + 38609212671.

It is an arithmetic number, because the mean of its divisors is an integer number (38609212671).

Almost surely, 2^77218425341 is an apocalyptic number.

It is an amenable number.

77218425341 is a deficient number, since it is larger than the sum of its proper divisors (1).

77218425341 is an equidigital number, since it uses as much as digits as its factorization.

77218425341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320, while the sum is 44.

The spelling of 77218425341 in words is "seventy-seven billion, two hundred eighteen million, four hundred twenty-five thousand, three hundred forty-one".