87134128616 has 16 divisors (see below), whose sum is σ = 164060078400. Its totient is φ = 43384774384.

The previous prime is 87134128597. The next prime is 87134128619. The reversal of 87134128616 is 61682143178.

It is not an unprimeable number, because it can be changed into a prime (87134128619) 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, 22784210 + ... + 22788033.

It is an arithmetic number, because the mean of its divisors is an integer number (10253754900).

Almost surely, 2^87134128616 is an apocalyptic number.

It is an amenable number.

87134128616 is a deficient number, since it is larger than the sum of its proper divisors (76925949784).

87134128616 is a wasteful number, since it uses less digits than its factorization.

87134128616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45572488 (or 45572484 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The spelling of 87134128616 in words is "eighty-seven billion, one hundred thirty-four million, one hundred twenty-eight thousand, six hundred sixteen".