80778008018 has 16 divisors (see below), whose sum is σ = 124816982400. Its totient is φ = 39184955376.

The previous prime is 80778008011. The next prime is 80778008023. The reversal of 80778008018 is 81080087708.

It is not an unprimeable number, because it can be changed into a prime (80778008011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3139130 + ... + 3164757.

It is an arithmetic number, because the mean of its divisors is an integer number (7801061400).

Almost surely, 2^80778008018 is an apocalyptic number.

80778008018 is a deficient number, since it is larger than the sum of its proper divisors (44038974382).

80778008018 is a wasteful number, since it uses less digits than its factorization.

80778008018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6304081.

The product of its (nonzero) digits is 200704, while the sum is 47.

The spelling of 80778008018 in words is "eighty billion, seven hundred seventy-eight million, eight thousand, eighteen".