87186532289 has 4 divisors (see below), whose sum is σ = 88290159360. Its totient is φ = 86082905220.

The previous prime is 87186532249. The next prime is 87186532297. The reversal of 87186532289 is 98223568178.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87186532289 - 2¹² = 87186528193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87186532229) 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, 551813417 + ... + 551813574.

It is an arithmetic number, because the mean of its divisors is an integer number (22072539840).

Almost surely, 2^87186532289 is an apocalyptic number.

It is an amenable number.

87186532289 is a deficient number, since it is larger than the sum of its proper divisors (1103627071).

87186532289 is a wasteful number, since it uses less digits than its factorization.

87186532289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103627070.

The product of its digits is 11612160, while the sum is 59.

The spelling of 87186532289 in words is "eighty-seven billion, one hundred eighty-six million, five hundred thirty-two thousand, two hundred eighty-nine".