243130736466745 has 16 divisors (see below), whose sum is σ = 297667272103632. Its totient is φ = 190574343648000.

The previous prime is 243130736466731. The next prime is 243130736466811. The reversal of 243130736466745 is 547664637031342.

It can be written as a sum of positive squares in 8 ways, for example, as 100948578898489 + 142182157568256 = 10047317^2 + 11924016^2 .

It is not a de Polignac number, because 243130736466745 - 2¹¹ = 243130736464697 is a prime.

It is a super-2 number, since 2×243130736466745² (a number of 30 digits) contains 22 as substring.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 625641006 + ... + 626029495.

It is an arithmetic number, because the mean of its divisors is an integer number (18604204506477).

Almost surely, 2^{243130736466745} is an apocalyptic number.

It is an amenable number.

243130736466745 is a deficient number, since it is larger than the sum of its proper divisors (54536535636887).

243130736466745 is a wasteful number, since it uses less digits than its factorization.

243130736466745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251671292.

The product of its (nonzero) digits is 182891520, while the sum is 61.

The spelling of 243130736466745 in words is "two hundred forty-three trillion, one hundred thirty billion, seven hundred thirty-six million, four hundred sixty-six thousand, seven hundred forty-five".