80873809978 has 16 divisors (see below), whose sum is σ = 132856587360. Its totient is φ = 36693722736.

The previous prime is 80873809957. The next prime is 80873810021. The reversal of 80873809978 is 87990837808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26358900 + ... + 26361967.

It is an arithmetic number, because the mean of its divisors is an integer number (8303536710).

Almost surely, 2^80873809978 is an apocalyptic number.

80873809978 is a deficient number, since it is larger than the sum of its proper divisors (51982777382).

80873809978 is a wasteful number, since it uses less digits than its factorization.

80873809978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52720941.

The product of its (nonzero) digits is 48771072, while the sum is 67.

The spelling of 80873809978 in words is "eighty billion, eight hundred seventy-three million, eight hundred nine thousand, nine hundred seventy-eight".