770381280761 has 2 divisors, whose sum is σ = 770381280762. Its totient is φ = 770381280760.

The previous prime is 770381280749. The next prime is 770381280811. The reversal of 770381280761 is 167082183077.

It is a happy number.

It is an a-pointer prime, because the next prime (770381280811) can be obtained adding 770381280761 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 706009979536 + 64371301225 = 840244^2 + 253715^2 .

It is a cyclic number.

It is not a de Polignac number, because 770381280761 - 2³⁴ = 753201411577 is a prime.

It is not a weakly prime, because it can be changed into another prime (770381280061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385190640380 + 385190640381.

It is an arithmetic number, because the mean of its divisors is an integer number (385190640381).

Almost surely, 2^770381280761 is an apocalyptic number.

It is an amenable number.

770381280761 is a deficient number, since it is larger than the sum of its proper divisors (1).

770381280761 is an equidigital number, since it uses as much as digits as its factorization.

770381280761 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 50.

The spelling of 770381280761 in words is "seven hundred seventy billion, three hundred eighty-one million, two hundred eighty thousand, seven hundred sixty-one".