243154541012 has 12 divisors (see below), whose sum is σ = 425817400596. Its totient is φ = 121492426560.

The previous prime is 243154540969. The next prime is 243154541017. The reversal of 243154541012 is 210145451342.

It can be written as a sum of positive squares in 2 ways, for example, as 196413830596 + 46740710416 = 443186^2 + 216196^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 243154541012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243154541017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21204539 + ... + 21216002.

It is an arithmetic number, because the mean of its divisors is an integer number (35484783383).

Almost surely, 2^243154541012 is an apocalyptic number.

It is an amenable number.

243154541012 is a deficient number, since it is larger than the sum of its proper divisors (182662859584).

243154541012 is a wasteful number, since it uses less digits than its factorization.

243154541012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42421978 (or 42421976 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 243154541012 its reverse (210145451342), we get a palindrome (453299992354).

The spelling of 243154541012 in words is "two hundred forty-three billion, one hundred fifty-four million, five hundred forty-one thousand, twelve".