243120526661072 has 160 divisors (see below), whose sum is σ = 508866756097920. Its totient is φ = 112152494039040.

The previous prime is 243120526661017. The next prime is 243120526661179. The reversal of 243120526661072 is 270166625021342.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8202155372 + ... + 8202185012.

It is an arithmetic number, because the mean of its divisors is an integer number (3180417225612).

Almost surely, 2^{243120526661072} 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 243120526661072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254433378048960).

243120526661072 is an abundant number, since it is smaller than the sum of its proper divisors (265746229436848).

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

243120526661072 is a wasteful number, since it uses less digits than its factorization.

243120526661072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31541 (or 31535 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 243120526661072 in words is "two hundred forty-three trillion, one hundred twenty billion, five hundred twenty-six million, six hundred sixty-one thousand, seventy-two".