80611478 has 4 divisors (see below), whose sum is σ = 120917220. Its totient is φ = 40305738.

The previous prime is 80611469. The next prime is 80611507. The reversal of 80611478 is 87411608.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20152868 + ... + 20152871.

It is an arithmetic number, because the mean of its divisors is an integer number (30229305).

Almost surely, 2^80611478 is an apocalyptic number.

80611478 is a deficient number, since it is larger than the sum of its proper divisors (40305742).

80611478 is a wasteful number, since it uses less digits than its factorization.

80611478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40305741.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 80611478 is about 8978.3894992365. The cubic root of 80611478 is about 431.9819772717.

The spelling of 80611478 in words is "eighty million, six hundred eleven thousand, four hundred seventy-eight".