87528522834128 has 10 divisors (see below), whose sum is σ = 169586512991154. Its totient is φ = 43764261417056.

The previous prime is 87528522834121. The next prime is 87528522834131. The reversal of 87528522834128 is 82143822582578.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 87436114129984 + 92408704144 = 9350728^2 + 303988^2 .

It is a super-2 number, since 2×87528522834128² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87528522834121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2735266338551 + ... + 2735266338582.

Almost surely, 2^{87528522834128} is an apocalyptic number.

It is an amenable number.

87528522834128 is a deficient number, since it is larger than the sum of its proper divisors (82057990157026).

87528522834128 is a wasteful number, since it uses less digits than its factorization.

87528522834128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5470532677141 (or 5470532677135 counting only the distinct ones).

The product of its digits is 137625600, while the sum is 65.

The spelling of 87528522834128 in words is "eighty-seven trillion, five hundred twenty-eight billion, five hundred twenty-two million, eight hundred thirty-four thousand, one hundred twenty-eight".