891013121310198 has 16 divisors (see below), whose sum is σ = 1782679238711280. Its totient is φ = 296895541088256.

The previous prime is 891013121310197. The next prime is 891013121310241.

891013121310198 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891013121310197) 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, 27208152715 + ... + 27208185462.

It is an arithmetic number, because the mean of its divisors is an integer number (111417452419455).

Almost surely, 2^{891013121310198} is an apocalyptic number.

891013121310198 is an abundant number, since it is smaller than the sum of its proper divisors (891666117401082).

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

891013121310198 is a wasteful number, since it uses less digits than its factorization.

891013121310198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54416340911.

The product of its (nonzero) digits is 93312, while the sum is 48.

The spelling of 891013121310198 in words is "eight hundred ninety-one trillion, thirteen billion, one hundred twenty-one million, three hundred ten thousand, one hundred ninety-eight".