77433321773 has 4 divisors (see below), whose sum is σ = 77550823680. Its totient is φ = 77315819868.

The previous prime is 77433321751. The next prime is 77433321781. The reversal of 77433321773 is 37712333477.

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.

It is a cyclic number.

It is not a de Polignac number, because 77433321773 - 2¹⁶ = 77433256237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77433221773) 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, 58749965 + ... + 58751282.

It is an arithmetic number, because the mean of its divisors is an integer number (19387705920).

Almost surely, 2^77433321773 is an apocalyptic number.

It is an amenable number.

77433321773 is a deficient number, since it is larger than the sum of its proper divisors (117501907).

77433321773 is a wasteful number, since it uses less digits than its factorization.

77433321773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117501906.

The product of its digits is 1555848, while the sum is 47.

The spelling of 77433321773 in words is "seventy-seven billion, four hundred thirty-three million, three hundred twenty-one thousand, seven hundred seventy-three".