243251033145 has 32 divisors (see below), whose sum is σ = 415800698880. Its totient is φ = 121071360960.

The previous prime is 243251033099. The next prime is 243251033149. The reversal of 243251033145 is 541330152342.

It is not a de Polignac number, because 243251033145 - 2¹¹ = 243251031097 is a prime.

It is a super-2 number, since 2×243251033145² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243251033149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6350401 + ... + 6388590.

It is an arithmetic number, because the mean of its divisors is an integer number (12993771840).

Almost surely, 2^243251033145 is an apocalyptic number.

It is an amenable number.

243251033145 is a deficient number, since it is larger than the sum of its proper divisors (172549665735).

243251033145 is a wasteful number, since it uses less digits than its factorization.

243251033145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12739085.

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 243251033145 its reverse (541330152342), we get a palindrome (784581185487).

The spelling of 243251033145 in words is "two hundred forty-three billion, two hundred fifty-one million, thirty-three thousand, one hundred forty-five".