87520513647 has 8 divisors (see below), whose sum is σ = 133364592256. Its totient is φ = 50011722072.

The previous prime is 87520513627. The next prime is 87520513709. The reversal of 87520513647 is 74631502578.

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

It is not a de Polignac number, because 87520513647 - 2¹⁴ = 87520497263 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87520513596 and 87520513605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87520513627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2083821733 + ... + 2083821774.

It is an arithmetic number, because the mean of its divisors is an integer number (16670574032).

Almost surely, 2^87520513647 is an apocalyptic number.

87520513647 is a deficient number, since it is larger than the sum of its proper divisors (45844078609).

87520513647 is a wasteful number, since it uses less digits than its factorization.

87520513647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4167643517.

The product of its (nonzero) digits is 1411200, while the sum is 48.

The spelling of 87520513647 in words is "eighty-seven billion, five hundred twenty million, five hundred thirteen thousand, six hundred forty-seven".