7770080166421 has 2 divisors, whose sum is σ = 7770080166422. Its totient is φ = 7770080166420.

The previous prime is 7770080166361. The next prime is 7770080166491. The reversal of 7770080166421 is 1246610800777.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7760765214225 + 9314952196 = 2785815^2 + 96514^2 .

It is a cyclic number.

It is not a de Polignac number, because 7770080166421 - 2⁹ = 7770080165909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7770080166491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3885040083210 + 3885040083211.

It is an arithmetic number, because the mean of its divisors is an integer number (3885040083211).

Almost surely, 2^{7770080166421} is an apocalyptic number.

It is an amenable number.

7770080166421 is a deficient number, since it is larger than the sum of its proper divisors (1).

7770080166421 is an equidigital number, since it uses as much as digits as its factorization.

7770080166421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 790272, while the sum is 49.

The spelling of 7770080166421 in words is "seven trillion, seven hundred seventy billion, eighty million, one hundred sixty-six thousand, four hundred twenty-one".