80466399556 has 9 divisors (see below), whose sum is σ = 140817192061. Its totient is φ = 40232916112.

The previous prime is 80466399539. The next prime is 80466399571. The reversal of 80466399556 is 65599366408.

It is a happy number.

The square root of 80466399556 is 283666.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 74447122500 + 6019277056 = 272850^2 + 77584^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80466399494 and 80466399503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 496416 + ... + 638248.

Almost surely, 2^80466399556 is an apocalyptic number.

80466399556 is the 283666-th square number.

It is an amenable number.

80466399556 is a deficient number, since it is larger than the sum of its proper divisors (60350792505).

80466399556 is an frugal number, since it uses more digits than its factorization.

80466399556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283670 (or 141835 counting only the distinct ones).

The product of its (nonzero) digits is 41990400, while the sum is 61.

The spelling of 80466399556 in words is "eighty billion, four hundred sixty-six million, three hundred ninety-nine thousand, five hundred fifty-six".