77607106573 has 2 divisors, whose sum is σ = 77607106574. Its totient is φ = 77607106572.

The previous prime is 77607106559. The next prime is 77607106637. The reversal of 77607106573 is 37560170677.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42328124644 + 35278981929 = 205738^2 + 187827^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77607106573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77607100573) 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, 38803553286 + 38803553287.

It is an arithmetic number, because the mean of its divisors is an integer number (38803553287).

Almost surely, 2^77607106573 is an apocalyptic number.

It is an amenable number.

77607106573 is a deficient number, since it is larger than the sum of its proper divisors (1).

77607106573 is an equidigital number, since it uses as much as digits as its factorization.

77607106573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296540, while the sum is 49.

The spelling of 77607106573 in words is "seventy-seven billion, six hundred seven million, one hundred six thousand, five hundred seventy-three".