80120015 has 4 divisors (see below), whose sum is σ = 96144024. Its totient is φ = 64096008.

The previous prime is 80119999. The next prime is 80120071. The reversal of 80120015 is 51002108.

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 80120015 - 2⁴ = 80119999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80119975 and 80120002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8011997 + ... + 8012006.

It is an arithmetic number, because the mean of its divisors is an integer number (24036006).

Almost surely, 2^80120015 is an apocalyptic number.

80120015 is a deficient number, since it is larger than the sum of its proper divisors (16024009).

80120015 is a wasteful number, since it uses less digits than its factorization.

80120015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16024008.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 80120015 is about 8950.9784381374. The cubic root of 80120015 is about 431.1023007469.

The spelling of 80120015 in words is "eighty million, one hundred twenty thousand, fifteen".