80118705 has 32 divisors (see below), whose sum is σ = 136252800. Its totient is φ = 40061952.

The previous prime is 80118697. The next prime is 80118707. The reversal of 80118705 is 50781108.

It is not a de Polignac number, because 80118705 - 2³ = 80118697 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80118707) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96231 + ... + 97059.

It is an arithmetic number, because the mean of its divisors is an integer number (4257900).

Almost surely, 2^80118705 is an apocalyptic number.

80118705 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

80118705 is a deficient number, since it is larger than the sum of its proper divisors (56134095).

80118705 is a wasteful number, since it uses less digits than its factorization.

80118705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233.

The product of its (nonzero) digits is 2240, while the sum is 30.

The square root of 80118705 is about 8950.9052614805. The cubic root of 80118705 is about 431.0999511588.

The spelling of 80118705 in words is "eighty million, one hundred eighteen thousand, seven hundred five".