691112321114112 has 504 divisors, whose sum is σ = 2075468808130536. Its totient is φ = 230108144467968.

The previous prime is 691112321114051. The next prime is 691112321114141. The reversal of 691112321114112 is 211411123211196.

691112321114112 is a `hidden beast` number, since 6 + 9 + 1 + 1 + 1 + 23 + 211 + 1 + 411 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is an insolite number, because it is divisible by the sum (162) and by the product (26873856) of the squares of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 50361599283 + ... + 50361613005.

Almost surely, 2^{691112321114112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 691112321114112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1037734404065268).

691112321114112 is an abundant number, since it is smaller than the sum of its proper divisors (1384356487016424).

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

691112321114112 is an frugal number, since it uses more digits than its factorization.

691112321114112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14710 (or 14665 counting only the distinct ones).

The product of its digits is 5184, while the sum is 36.

The spelling of 691112321114112 in words is "six hundred ninety-one trillion, one hundred twelve billion, three hundred twenty-one million, one hundred fourteen thousand, one hundred twelve".