80780844366 has 12 divisors (see below), whose sum is σ = 175025162832. Its totient is φ = 26926948116.

The previous prime is 80780844349. The next prime is 80780844367. The reversal of 80780844366 is 66344808708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80780844367) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2243912326 + ... + 2243912361.

It is an arithmetic number, because the mean of its divisors is an integer number (14585430236).

Almost surely, 2^80780844366 is an apocalyptic number.

80780844366 is an abundant number, since it is smaller than the sum of its proper divisors (94244318466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80780844366 is a wasteful number, since it uses less digits than its factorization.

80780844366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4487824695 (or 4487824692 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 54.

The spelling of 80780844366 in words is "eighty billion, seven hundred eighty million, eight hundred forty-four thousand, three hundred sixty-six".