691342424243196 has 36 divisors (see below), whose sum is σ = 1773112388351976. Its totient is φ = 209497704315680.

The previous prime is 691342424243153. The next prime is 691342424243243.

691342424243196 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 238065571635 + ... + 238065574538.

It is an arithmetic number, because the mean of its divisors is an integer number (49253121898666).

Almost surely, 2^{691342424243196} is an apocalyptic number.

691342424243196 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

691342424243196 is an abundant number, since it is smaller than the sum of its proper divisors (1081769964108780).

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

691342424243196 is a wasteful number, since it uses less digits than its factorization.

691342424243196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476131146202 (or 476131146189 counting only the distinct ones).

The product of its digits is 53747712, while the sum is 60.

The spelling of 691342424243196 in words is "six hundred ninety-one trillion, three hundred forty-two billion, four hundred twenty-four million, two hundred forty-three thousand, one hundred ninety-six".