80449481646 has 24 divisors (see below), whose sum is σ = 174327655320. Its totient is φ = 26813348496.

The previous prime is 80449481587. The next prime is 80449481669. The reversal of 80449481646 is 64618494408.

80449481646 is a `hidden beast` number, since 80 + 4 + 49 + 481 + 6 + 46 = 666.

It is a super-2 number, since 2×80449481646² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 80449481592 and 80449481601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101740 + ... + 413823.

It is an arithmetic number, because the mean of its divisors is an integer number (7263652305).

Almost surely, 2^80449481646 is an apocalyptic number.

80449481646 is an abundant number, since it is smaller than the sum of its proper divisors (93878173674).

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

80449481646 is a wasteful number, since it uses less digits than its factorization.

80449481646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524240 (or 524237 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 54.

The spelling of 80449481646 in words is "eighty billion, four hundred forty-nine million, four hundred eighty-one thousand, six hundred forty-six".