77603212673 has 4 divisors (see below), whose sum is σ = 88689385920. Its totient is φ = 66517039428.

The previous prime is 77603212667. The next prime is 77603212727. The reversal of 77603212673 is 37621230677.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37621230677 = 131 ⋅287184967.

It is not a de Polignac number, because 77603212673 - 2⁴ = 77603212657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77603212873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5543086613 + ... + 5543086626.

It is an arithmetic number, because the mean of its divisors is an integer number (22172346480).

Almost surely, 2^77603212673 is an apocalyptic number.

It is an amenable number.

77603212673 is a deficient number, since it is larger than the sum of its proper divisors (11086173247).

77603212673 is a wasteful number, since it uses less digits than its factorization.

77603212673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11086173246.

The product of its (nonzero) digits is 444528, while the sum is 44.

The spelling of 77603212673 in words is "seventy-seven billion, six hundred three million, two hundred twelve thousand, six hundred seventy-three".