80705867834 has 8 divisors (see below), whose sum is σ = 121117318740. Its totient is φ = 40333428256.

The previous prime is 80705867771. The next prime is 80705867839. The reversal of 80705867834 is 43876850708.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 66975887209 + 13729980625 = 258797^2 + 117175^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 80705867834.

It is not an unprimeable number, because it can be changed into a prime (80705867839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9747659 + ... + 9755934.

Almost surely, 2^80705867834 is an apocalyptic number.

80705867834 is a deficient number, since it is larger than the sum of its proper divisors (40411450906).

80705867834 is a wasteful number, since it uses less digits than its factorization.

80705867834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19505664.

The product of its (nonzero) digits is 9031680, while the sum is 56.

The spelling of 80705867834 in words is "eighty billion, seven hundred five million, eight hundred sixty-seven thousand, eight hundred thirty-four".