77066372329 has 2 divisors, whose sum is σ = 77066372330. Its totient is φ = 77066372328.

The previous prime is 77066372263. The next prime is 77066372387. The reversal of 77066372329 is 92327366077.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57048367104 + 20018005225 = 238848^2 + 141485^2 .

It is a cyclic number.

It is not a de Polignac number, because 77066372329 - 2⁹ = 77066371817 is a prime.

It is not a weakly prime, because it can be changed into another prime (77066372429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38533186164 + 38533186165.

It is an arithmetic number, because the mean of its divisors is an integer number (38533186165).

Almost surely, 2^77066372329 is an apocalyptic number.

It is an amenable number.

77066372329 is a deficient number, since it is larger than the sum of its proper divisors (1).

77066372329 is an equidigital number, since it uses as much as digits as its factorization.

77066372329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4000752, while the sum is 52.

The spelling of 77066372329 in words is "seventy-seven billion, sixty-six million, three hundred seventy-two thousand, three hundred twenty-nine".