84144202081 has 8 divisors (see below), whose sum is σ = 84321969984. Its totient is φ = 83966522640.

The previous prime is 84144202073. The next prime is 84144202091. The reversal of 84144202081 is 18020244148.

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

It is a cyclic number.

It is not a de Polignac number, because 84144202081 - 2³ = 84144202073 is a prime.

It is a super-2 number, since 2×84144202081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84144202091) 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 7 ways as a sum of consecutive naturals, for example, 2093151 + ... + 2132971.

It is an arithmetic number, because the mean of its divisors is an integer number (10540246248).

Almost surely, 2^84144202081 is an apocalyptic number.

It is an amenable number.

84144202081 is a deficient number, since it is larger than the sum of its proper divisors (177767903).

84144202081 is a wasteful number, since it uses less digits than its factorization.

84144202081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44231.

The product of its (nonzero) digits is 16384, while the sum is 34.

It can be divided in two parts, 84144 and 202081, that added together give a square (286225 = 535²).

The spelling of 84144202081 in words is "eighty-four billion, one hundred forty-four million, two hundred two thousand, eighty-one".