87532552657639 has 4 divisors (see below), whose sum is σ = 87533774039920. Its totient is φ = 87531331275360.

The previous prime is 87532552657607. The next prime is 87532552657657. The reversal of 87532552657639 is 93675625523578.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87532552657639 - 2⁵ = 87532552657607 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 (87532552657679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 610583634 + ... + 610726975.

It is an arithmetic number, because the mean of its divisors is an integer number (21883443509980).

Almost surely, 2^{87532552657639} is an apocalyptic number.

87532552657639 is a deficient number, since it is larger than the sum of its proper divisors (1221382281).

87532552657639 is a wasteful number, since it uses less digits than its factorization.

87532552657639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221382280.

The product of its digits is 2857680000, while the sum is 73.

The spelling of 87532552657639 in words is "eighty-seven trillion, five hundred thirty-two billion, five hundred fifty-two million, six hundred fifty-seven thousand, six hundred thirty-nine".