80678429946 has 32 divisors (see below), whose sum is σ = 179607343680. Its totient is φ = 26844518448.

The previous prime is 80678429941. The next prime is 80678429947. The reversal of 80678429946 is 64992487608.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80678429941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1311076 + ... + 1371231.

It is an arithmetic number, because the mean of its divisors is an integer number (5612729490).

Almost surely, 2^80678429946 is an apocalyptic number.

80678429946 is an abundant number, since it is smaller than the sum of its proper divisors (98928913734).

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

80678429946 is a wasteful number, since it uses less digits than its factorization.

80678429946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2682875 (or 2682869 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 63.

The spelling of 80678429946 in words is "eighty billion, six hundred seventy-eight million, four hundred twenty-nine thousand, nine hundred forty-six".