80600778918 has 32 divisors (see below), whose sum is σ = 195395829120. Its totient is φ = 24424478280.

The previous prime is 80600778911. The next prime is 80600778919. The reversal of 80600778918 is 81987700608.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80600778911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67845180 + ... + 67846367.

It is an arithmetic number, because the mean of its divisors is an integer number (6106119660).

Almost surely, 2^80600778918 is an apocalyptic number.

80600778918 is an abundant number, since it is smaller than the sum of its proper divisors (114795050202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80600778918 is a wasteful number, since it uses less digits than its factorization.

80600778918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135691569 (or 135691563 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 54.

The spelling of 80600778918 in words is "eighty billion, six hundred million, seven hundred seventy-eight thousand, nine hundred eighteen".