80545440445 has 8 divisors (see below), whose sum is σ = 102340089144. Its totient is φ = 60645978624.

The previous prime is 80545440427. The next prime is 80545440457. The reversal of 80545440445 is 54404454508.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2625742564 + 77919697881 = 51242^2 + 279141^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80545440445 - 2¹⁹ = 80544916157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473796624 + ... + 473796793.

It is an arithmetic number, because the mean of its divisors is an integer number (12792511143).

Almost surely, 2^80545440445 is an apocalyptic number.

80545440445 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

80545440445 is a deficient number, since it is larger than the sum of its proper divisors (21794648699).

80545440445 is a wasteful number, since it uses less digits than its factorization.

80545440445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947593439.

The product of its (nonzero) digits is 1024000, while the sum is 43.

The spelling of 80545440445 in words is "eighty billion, five hundred forty-five million, four hundred forty thousand, four hundred forty-five".