770238316121 has 2 divisors, whose sum is σ = 770238316122. Its totient is φ = 770238316120.

The previous prime is 770238316049. The next prime is 770238316139. The reversal of 770238316121 is 121613832077.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 713146470400 + 57091845721 = 844480^2 + 238939^2 .

It is an emirp because it is prime and its reverse (121613832077) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 770238316121 - 2¹⁴ = 770238299737 is a prime.

It is not a weakly prime, because it can be changed into another prime (770238316721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385119158060 + 385119158061.

It is an arithmetic number, because the mean of its divisors is an integer number (385119158061).

Almost surely, 2^770238316121 is an apocalyptic number.

It is an amenable number.

770238316121 is a deficient number, since it is larger than the sum of its proper divisors (1).

770238316121 is an equidigital number, since it uses as much as digits as its factorization.

770238316121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 41.

The spelling of 770238316121 in words is "seven hundred seventy billion, two hundred thirty-eight million, three hundred sixteen thousand, one hundred twenty-one".