80556484901 has 4 divisors (see below), whose sum is σ = 80571744204. Its totient is φ = 80541225600.

The previous prime is 80556484889. The next prime is 80556484949. The reversal of 80556484901 is 10948465508.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7630022500 + 72926462401 = 87350^2 + 270049^2 .

It is a cyclic number.

It is not a de Polignac number, because 80556484901 - 2¹⁰ = 80556483877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80556484901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80556484501) 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, 7621730 + ... + 7632291.

It is an arithmetic number, because the mean of its divisors is an integer number (20142936051).

Almost surely, 2^80556484901 is an apocalyptic number.

It is an amenable number.

80556484901 is a deficient number, since it is larger than the sum of its proper divisors (15259303).

80556484901 is a wasteful number, since it uses less digits than its factorization.

80556484901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15259302.

The product of its (nonzero) digits is 1382400, while the sum is 50.

The spelling of 80556484901 in words is "eighty billion, five hundred fifty-six million, four hundred eighty-four thousand, nine hundred one".