80440438766 has 8 divisors (see below), whose sum is σ = 120707451720. Its totient is φ = 40204621528.

The previous prime is 80440438747. The next prime is 80440438769. The reversal of 80440438766 is 66783404408.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80440438769) 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, 7792481 + ... + 7802796.

It is an arithmetic number, because the mean of its divisors is an integer number (15088431465).

Almost surely, 2^80440438766 is an apocalyptic number.

80440438766 is a deficient number, since it is larger than the sum of its proper divisors (40267012954).

80440438766 is a wasteful number, since it uses less digits than its factorization.

80440438766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15597858.

The product of its (nonzero) digits is 3096576, while the sum is 50.

The spelling of 80440438766 in words is "eighty billion, four hundred forty million, four hundred thirty-eight thousand, seven hundred sixty-six".