244166455723541 has 4 divisors (see below), whose sum is σ = 262948490779212. Its totient is φ = 225384420667872.

The previous prime is 244166455723459. The next prime is 244166455723543. The reversal of 244166455723541 is 145327554661442.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 120957565721041 + 123208890002500 = 10998071^2 + 11099950^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244166455723541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244166455723543) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9391017527816 + ... + 9391017527841.

It is an arithmetic number, because the mean of its divisors is an integer number (65737122694803).

Almost surely, 2^{244166455723541} is an apocalyptic number.

It is an amenable number.

244166455723541 is a deficient number, since it is larger than the sum of its proper divisors (18782035055671).

244166455723541 is a wasteful number, since it uses less digits than its factorization.

244166455723541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18782035055670.

The product of its digits is 96768000, while the sum is 59.

The spelling of 244166455723541 in words is "two hundred forty-four trillion, one hundred sixty-six billion, four hundred fifty-five million, seven hundred twenty-three thousand, five hundred forty-one".