76766737757 has 2 divisors, whose sum is σ = 76766737758. Its totient is φ = 76766737756.

The previous prime is 76766737717. The next prime is 76766737787. The reversal of 76766737757 is 75773766767.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54077642116 + 22689095641 = 232546^2 + 150629^2 .

It is a cyclic number.

It is not a de Polignac number, because 76766737757 - 2¹⁴ = 76766721373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76766737717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38383368878 + 38383368879.

It is an arithmetic number, because the mean of its divisors is an integer number (38383368879).

Almost surely, 2^76766737757 is an apocalyptic number.

It is an amenable number.

76766737757 is a deficient number, since it is larger than the sum of its proper divisors (1).

76766737757 is an equidigital number, since it uses as much as digits as its factorization.

76766737757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381182760, while the sum is 68.

The spelling of 76766737757 in words is "seventy-six billion, seven hundred sixty-six million, seven hundred thirty-seven thousand, seven hundred fifty-seven".