77444603099 has 4 divisors (see below), whose sum is σ = 77639678064. Its totient is φ = 77249528136.

The previous prime is 77444603063. The next prime is 77444603123. The reversal of 77444603099 is 99030644477.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77444603099 - 2⁸ = 77444602843 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77444603099.

It is not an unprimeable number, because it can be changed into a prime (77444603009) 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 in 3 ways as a sum of consecutive naturals, for example, 97536887 + ... + 97537680.

It is an arithmetic number, because the mean of its divisors is an integer number (19409919516).

Almost surely, 2^77444603099 is an apocalyptic number.

77444603099 is a deficient number, since it is larger than the sum of its proper divisors (195074965).

77444603099 is a wasteful number, since it uses less digits than its factorization.

77444603099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195074964.

The product of its (nonzero) digits is 4572288, while the sum is 53.

The spelling of 77444603099 in words is "seventy-seven billion, four hundred forty-four million, six hundred three thousand, ninety-nine".