80805550075578 has 12 divisors (see below), whose sum is σ = 175078691830458. Its totient is φ = 26935183358520.

The previous prime is 80805550075577. The next prime is 80805550075661. The reversal of 80805550075578 is 87557005550808.

80805550075578 is a `hidden beast` number, since 8 + 0 + 8 + 0 + 5 + 5 + 50 + 0 + 7 + 5 + 578 = 666.

It can be written as a sum of positive squares in only one way, i.e., 75464611839369 + 5340938236209 = 8687037^2 + 2311047^2 .

It is not an unprimeable number, because it can be changed into a prime (80805550075577) 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, 2244598613193 + ... + 2244598613228.

Almost surely, 2^{80805550075578} is an apocalyptic number.

80805550075578 is an abundant number, since it is smaller than the sum of its proper divisors (94273141754880).

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

80805550075578 is a wasteful number, since it uses less digits than its factorization.

80805550075578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4489197226429 (or 4489197226426 counting only the distinct ones).

The product of its (nonzero) digits is 78400000, while the sum is 63.

The spelling of 80805550075578 in words is "eighty trillion, eight hundred five billion, five hundred fifty million, seventy-five thousand, five hundred seventy-eight".