77444603085 has 16 divisors (see below), whose sum is σ = 124015258944. Its totient is φ = 41269156992.

The previous prime is 77444603063. The next prime is 77444603123. The reversal of 77444603085 is 58030644477.

It is a happy number.

It is not a de Polignac number, because 77444603085 - 2⁶ = 77444603021 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2145967 + ... + 2181756.

It is an arithmetic number, because the mean of its divisors is an integer number (7750953684).

Almost surely, 2^77444603085 is an apocalyptic number.

It is an amenable number.

77444603085 is a deficient number, since it is larger than the sum of its proper divisors (46570655859).

77444603085 is a wasteful number, since it uses less digits than its factorization.

77444603085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4328924.

The product of its (nonzero) digits is 2257920, while the sum is 48.

The spelling of 77444603085 in words is "seventy-seven billion, four hundred forty-four million, six hundred three thousand, eighty-five".