80544330621 has 6 divisors (see below), whose sum is σ = 116341810910. Its totient is φ = 53696220408.

The previous prime is 80544330599. The next prime is 80544330641. The reversal of 80544330621 is 12603344508.

80544330621 is a `hidden beast` number, since 80 + 544 + 3 + 30 + 6 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 55690808121 + 24853522500 = 235989^2 + 157650^2 .

It is not a de Polignac number, because 80544330621 - 2⁶ = 80544330557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80544330641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4474685026 + ... + 4474685043.

Almost surely, 2^80544330621 is an apocalyptic number.

It is an amenable number.

80544330621 is a deficient number, since it is larger than the sum of its proper divisors (35797480289).

80544330621 is a wasteful number, since it uses less digits than its factorization.

80544330621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8949370075 (or 8949370072 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 80544330621 in words is "eighty billion, five hundred forty-four million, three hundred thirty thousand, six hundred twenty-one".