80078851 has 4 divisors (see below), whose sum is σ = 80498304. Its totient is φ = 79659400.

The previous prime is 80078849. The next prime is 80078881. The reversal of 80078851 is 15887008.

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

It is a cyclic number.

It is not a de Polignac number, because 80078851 - 2¹ = 80078849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80078851.

It is not an unprimeable number, because it can be changed into a prime (80078881) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 209440 + ... + 209821.

It is an arithmetic number, because the mean of its divisors is an integer number (20124576).

Almost surely, 2^80078851 is an apocalyptic number.

80078851 is a deficient number, since it is larger than the sum of its proper divisors (419453).

80078851 is a wasteful number, since it uses less digits than its factorization.

80078851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419452.

The product of its (nonzero) digits is 17920, while the sum is 37.

The square root of 80078851 is about 8948.6787292874. The cubic root of 80078851 is about 431.0284576290.

The spelling of 80078851 in words is "eighty million, seventy-eight thousand, eight hundred fifty-one".