80655044981 has 4 divisors (see below), whose sum is σ = 92177194272. Its totient is φ = 69132895692.

The previous prime is 80655044929. The next prime is 80655044983. The reversal of 80655044981 is 18944055608.

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 not a de Polignac number, because 80655044981 - 2¹⁰ = 80655043957 is a prime.

It is a super-2 number, since 2×80655044981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80655044983) 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 3 ways as a sum of consecutive naturals, for example, 5761074635 + ... + 5761074648.

It is an arithmetic number, because the mean of its divisors is an integer number (23044298568).

Almost surely, 2^80655044981 is an apocalyptic number.

It is an amenable number.

80655044981 is a deficient number, since it is larger than the sum of its proper divisors (11522149291).

80655044981 is a wasteful number, since it uses less digits than its factorization.

80655044981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11522149290.

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

The spelling of 80655044981 in words is "eighty billion, six hundred fifty-five million, forty-four thousand, nine hundred eighty-one".