43818827120641 has 4 divisors (see below), whose sum is σ = 44039022232000. Its totient is φ = 43598632009284.

The previous prime is 43818827120599. The next prime is 43818827120683. The reversal of 43818827120641 is 14602172881834.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (43818827120599) and next prime (43818827120683).

It is a cyclic number.

It is not a de Polignac number, because 43818827120641 - 2⁷ = 43818827120513 is a prime.

It is a super-2 number, since 2×43818827120641² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43818827120441) 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 3 ways as a sum of consecutive naturals, for example, 110097555381 + ... + 110097555778.

It is an arithmetic number, because the mean of its divisors is an integer number (11009755558000).

Almost surely, 2^{43818827120641} is an apocalyptic number.

It is an amenable number.

43818827120641 is a deficient number, since it is larger than the sum of its proper divisors (220195111359).

43818827120641 is a wasteful number, since it uses less digits than its factorization.

43818827120641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220195111358.

The product of its (nonzero) digits is 4128768, while the sum is 55.

The spelling of 43818827120641 in words is "forty-three trillion, eight hundred eighteen billion, eight hundred twenty-seven million, one hundred twenty thousand, six hundred forty-one".