87543332111 has 12 divisors (see below), whose sum is σ = 90003707640. Its totient is φ = 85148526240.

The previous prime is 87543332083. The next prime is 87543332117. The reversal of 87543332111 is 11123334578.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-87543332111 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87543332117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4838600 + ... + 4856658.

It is an arithmetic number, because the mean of its divisors is an integer number (7500308970).

Almost surely, 2^87543332111 is an apocalyptic number.

87543332111 is a deficient number, since it is larger than the sum of its proper divisors (2460375529).

87543332111 is a wasteful number, since it uses less digits than its factorization.

87543332111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21674 (or 21637 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

Adding to 87543332111 its reverse (11123334578), we get a palindrome (98666666689).

The spelling of 87543332111 in words is "eighty-seven billion, five hundred forty-three million, three hundred thirty-two thousand, one hundred eleven".