80443439946 has 24 divisors (see below), whose sum is σ = 174470035584. Its totient is φ = 26787416040.

The previous prime is 80443439927. The next prime is 80443439957. The reversal of 80443439946 is 64993434408.

80443439946 is a `hidden beast` number, since 80 + 4 + 43 + 439 + 94 + 6 = 666.

It is a super-2 number, since 2×80443439946² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80443439892 and 80443439901.

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, 2236996 + ... + 2272671.

It is an arithmetic number, because the mean of its divisors is an integer number (7269584816).

Almost surely, 2^80443439946 is an apocalyptic number.

80443439946 is an abundant number, since it is smaller than the sum of its proper divisors (94026595638).

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

80443439946 is a wasteful number, since it uses less digits than its factorization.

80443439946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4510666 (or 4510663 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 54.

The spelling of 80443439946 in words is "eighty billion, four hundred forty-three million, four hundred thirty-nine thousand, nine hundred forty-six".