84564257530 has 16 divisors (see below), whose sum is σ = 161169526440. Its totient is φ = 31835955712.

The previous prime is 84564257507. The next prime is 84564257567. The reversal of 84564257530 is 3575246548.

It can be written as a sum of positive squares in 4 ways, for example, as 77185619329 + 7378638201 = 277823^2 + 85899^2 .

It is a super-2 number, since 2×84564257530² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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, 248718235 + ... + 248718574.

Almost surely, 2^84564257530 is an apocalyptic number.

84564257530 is a deficient number, since it is larger than the sum of its proper divisors (76605268910).

84564257530 is a wasteful number, since it uses less digits than its factorization.

84564257530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497436833.

The product of its (nonzero) digits is 4032000, while the sum is 49.

The spelling of 84564257530 in words is "eighty-four billion, five hundred sixty-four million, two hundred fifty-seven thousand, five hundred thirty".