80545440446 has 4 divisors (see below), whose sum is σ = 120818160672. Its totient is φ = 40272720222.

The previous prime is 80545440427. The next prime is 80545440457. The reversal of 80545440446 is 64404454508.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 80545440397 and 80545440406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20136360110 + ... + 20136360113.

It is an arithmetic number, because the mean of its divisors is an integer number (30204540168).

Almost surely, 2^80545440446 is an apocalyptic number.

80545440446 is a deficient number, since it is larger than the sum of its proper divisors (40272720226).

80545440446 is a wasteful number, since it uses less digits than its factorization.

80545440446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40272720225.

The product of its (nonzero) digits is 1228800, while the sum is 44.

The spelling of 80545440446 in words is "eighty billion, five hundred forty-five million, four hundred forty thousand, four hundred forty-six".