243771197692 has 24 divisors (see below), whose sum is σ = 467025858432. Its totient is φ = 110413546800.

The previous prime is 243771197569. The next prime is 243771197717. The reversal of 243771197692 is 296791177342.

243771197692 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×243771197692² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9775984 + ... + 9800887.

It is an arithmetic number, because the mean of its divisors is an integer number (19459410768).

Almost surely, 2^243771197692 is an apocalyptic number.

243771197692 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

243771197692 is a deficient number, since it is larger than the sum of its proper divisors (223254660740).

243771197692 is a wasteful number, since it uses less digits than its factorization.

243771197692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19577169 (or 19577167 counting only the distinct ones).

The product of its digits is 8001504, while the sum is 58.

The spelling of 243771197692 in words is "two hundred forty-three billion, seven hundred seventy-one million, one hundred ninety-seven thousand, six hundred ninety-two".