765980079577 has 2 divisors, whose sum is σ = 765980079578. Its totient is φ = 765980079576.

The previous prime is 765980079517. The next prime is 765980079607. The reversal of 765980079577 is 775970089567.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 743062964121 + 22917115456 = 862011^2 + 151384^2 .

It is an emirp because it is prime and its reverse (775970089567) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-765980079577 is a prime.

It is not a weakly prime, because it can be changed into another prime (765980079517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382990039788 + 382990039789.

It is an arithmetic number, because the mean of its divisors is an integer number (382990039789).

Almost surely, 2^765980079577 is an apocalyptic number.

It is an amenable number.

765980079577 is a deficient number, since it is larger than the sum of its proper divisors (1).

765980079577 is an equidigital number, since it uses as much as digits as its factorization.

765980079577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233377200, while the sum is 70.

It can be divided in two parts, 7659800 and 79577, that added together give a palindrome (7739377).

The spelling of 765980079577 in words is "seven hundred sixty-five billion, nine hundred eighty million, seventy-nine thousand, five hundred seventy-seven".