770138770757 has 2 divisors, whose sum is σ = 770138770758. Its totient is φ = 770138770756.

The previous prime is 770138770691. The next prime is 770138770769. The reversal of 770138770757 is 757077831077.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 750673219396 + 19465551361 = 866414^2 + 139519^2 .

It is an emirp because it is prime and its reverse (757077831077) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 770138770757 - 2³⁶ = 701419294021 is a prime.

It is a super-2 number, since 2×770138770757² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 770138770696 and 770138770705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (770138770787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385069385378 + 385069385379.

It is an arithmetic number, because the mean of its divisors is an integer number (385069385379).

Almost surely, 2^770138770757 is an apocalyptic number.

It is an amenable number.

770138770757 is a deficient number, since it is larger than the sum of its proper divisors (1).

770138770757 is an equidigital number, since it uses as much as digits as its factorization.

770138770757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14117880, while the sum is 59.

The spelling of 770138770757 in words is "seven hundred seventy billion, one hundred thirty-eight million, seven hundred seventy thousand, seven hundred fifty-seven".