243251436124047 has 16 divisors (see below), whose sum is σ = 352375123268448. Its totient is φ = 148368472949760.

The previous prime is 243251436124027. The next prime is 243251436124127. The reversal of 243251436124047 is 740421634152342.

It is not a de Polignac number, because 243251436124047 - 2²² = 243251431929743 is a prime.

It is a super-2 number, since 2×243251436124047² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243251436123987 and 243251436124005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243251436124027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27598297854 + ... + 27598306667.

It is an arithmetic number, because the mean of its divisors is an integer number (22023445204278).

Almost surely, 2^{243251436124047} is an apocalyptic number.

243251436124047 is a deficient number, since it is larger than the sum of its proper divisors (109123687144401).

243251436124047 is a wasteful number, since it uses less digits than its factorization.

243251436124047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55196604650.

The product of its (nonzero) digits is 3870720, while the sum is 48.

The spelling of 243251436124047 in words is "two hundred forty-three trillion, two hundred fifty-one billion, four hundred thirty-six million, one hundred twenty-four thousand, forty-seven".