84530329081 has 9 divisors (see below), whose sum is σ = 92917017669. Its totient is φ = 76842846300.

The previous prime is 84530329067. The next prime is 84530329099. The reversal of 84530329081 is 18092303548.

The square root of 84530329081 is 290741.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 84530329081 - 2¹⁷ = 84530198009 is a prime.

It is a super-2 number, since 2×84530329081² (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 (84530329781) 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 8 ways as a sum of consecutive naturals, for example, 3184936 + ... + 3211366.

Almost surely, 2^84530329081 is an apocalyptic number.

84530329081 is the 290741-st square number.

84530329081 is the 145371-st centered octagonal number.

It is an amenable number.

84530329081 is a deficient number, since it is larger than the sum of its proper divisors (8386688588).

84530329081 is an frugal number, since it uses more digits than its factorization.

84530329081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52884 (or 26442 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 84530329081 in words is "eighty-four billion, five hundred thirty million, three hundred twenty-nine thousand, eighty-one".