80461065878 has 4 divisors (see below), whose sum is σ = 120691598820. Its totient is φ = 40230532938.

The previous prime is 80461065863. The next prime is 80461065889. The reversal of 80461065878 is 87856016408.

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

It is a Curzon number.

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, 20115266468 + ... + 20115266471.

It is an arithmetic number, because the mean of its divisors is an integer number (30172899705).

Almost surely, 2^80461065878 is an apocalyptic number.

80461065878 is a deficient number, since it is larger than the sum of its proper divisors (40230532942).

80461065878 is a wasteful number, since it uses less digits than its factorization.

80461065878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40230532941.

The product of its (nonzero) digits is 2580480, while the sum is 53.

The spelling of 80461065878 in words is "eighty billion, four hundred sixty-one million, sixty-five thousand, eight hundred seventy-eight".