85981218958 has 8 divisors (see below), whose sum is σ = 130177172952. Its totient is φ = 42588827976.

The previous prime is 85981218949. The next prime is 85981218977.

85981218958 is nontrivially palindromic in base 10.

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 85981218958.

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, 200890485 + ... + 200890912.

It is an arithmetic number, because the mean of its divisors is an integer number (16272146619).

Almost surely, 2^85981218958 is an apocalyptic number.

85981218958 is a deficient number, since it is larger than the sum of its proper divisors (44195953994).

85981218958 is a wasteful number, since it uses less digits than its factorization.

85981218958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401781506.

The product of its digits is 16588800, while the sum is 64.

The spelling of 85981218958 in words is "eighty-five billion, nine hundred eighty-one million, two hundred eighteen thousand, nine hundred fifty-eight".