87535520639 has 8 divisors (see below), whose sum is σ = 100958399520. Its totient is φ = 74342092896.

The previous prime is 87535520629. The next prime is 87535520693. The reversal of 87535520639 is 93602553578.

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 87535520639 - 2¹⁶ = 87535455103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87535520629) 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, 57361964 + ... + 57363489.

It is an arithmetic number, because the mean of its divisors is an integer number (12619799940).

Almost surely, 2^87535520639 is an apocalyptic number.

87535520639 is a deficient number, since it is larger than the sum of its proper divisors (13422878881).

87535520639 is a wasteful number, since it uses less digits than its factorization.

87535520639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114725569.

The product of its (nonzero) digits is 6804000, while the sum is 53.

The spelling of 87535520639 in words is "eighty-seven billion, five hundred thirty-five million, five hundred twenty thousand, six hundred thirty-nine".