84564257529 has 8 divisors (see below), whose sum is σ = 112918893120. Its totient is φ = 56292896816.

The previous prime is 84564257507. The next prime is 84564257567. The reversal of 84564257529 is 92575246548.

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 84564257529 - 2⁸ = 84564257273 is a prime.

It is a super-2 number, since 2×84564257529² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84564257329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20816349 + ... + 20820410.

It is an arithmetic number, because the mean of its divisors is an integer number (14114861640).

Almost surely, 2^84564257529 is an apocalyptic number.

It is an amenable number.

84564257529 is a deficient number, since it is larger than the sum of its proper divisors (28354635591).

84564257529 is a wasteful number, since it uses less digits than its factorization.

84564257529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41637439.

The product of its digits is 24192000, while the sum is 57.

The spelling of 84564257529 in words is "eighty-four billion, five hundred sixty-four million, two hundred fifty-seven thousand, five hundred twenty-nine".