243741770180081 has 8 divisors (see below), whose sum is σ = 246827536561920. Its totient is φ = 240656014486368.

The previous prime is 243741770180021. The next prime is 243741770180099. The reversal of 243741770180081 is 180081077147342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243741770180081 is a prime.

It is a super-2 number, since 2×243741770180081² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243741770180021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49677725 + ... + 54363221.

It is an arithmetic number, because the mean of its divisors is an integer number (30853442070240).

Almost surely, 2^{243741770180081} is an apocalyptic number.

It is an amenable number.

243741770180081 is a deficient number, since it is larger than the sum of its proper divisors (3085766381839).

243741770180081 is an equidigital number, since it uses as much as digits as its factorization.

243741770180081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5344063.

The product of its (nonzero) digits is 2107392, while the sum is 53.

The spelling of 243741770180081 in words is "two hundred forty-three trillion, seven hundred forty-one billion, seven hundred seventy million, one hundred eighty thousand, eighty-one".