87281615166128 has 20 divisors (see below), whose sum is σ = 170659580116080. Its totient is φ = 43240433200704.

The previous prime is 87281615166121. The next prime is 87281615166217. The reversal of 87281615166128 is 82166151618278.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (87281615166121) 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, 25023397100 + ... + 25023400587.

It is an arithmetic number, because the mean of its divisors is an integer number (8532979005804).

Almost surely, 2^{87281615166128} is an apocalyptic number.

It is an amenable number.

87281615166128 is a deficient number, since it is larger than the sum of its proper divisors (83377964949952).

87281615166128 is a wasteful number, since it uses less digits than its factorization.

87281615166128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50046797804 (or 50046797798 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 62.

The spelling of 87281615166128 in words is "eighty-seven trillion, two hundred eighty-one billion, six hundred fifteen million, one hundred sixty-six thousand, one hundred twenty-eight".