87281618278 has 12 divisors (see below), whose sum is σ = 134193546180. Its totient is φ = 42576397520.

The previous prime is 87281618251. The next prime is 87281618279.

87281618278 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87281618279) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12977248 + ... + 12983971.

It is an arithmetic number, because the mean of its divisors is an integer number (11182795515).

Almost surely, 2^87281618278 is an apocalyptic number.

87281618278 is a deficient number, since it is larger than the sum of its proper divisors (46911927902).

87281618278 is a wasteful number, since it uses less digits than its factorization.

87281618278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25961303 (or 25961262 counting only the distinct ones).

The product of its digits is 4816896, while the sum is 58.

The spelling of 87281618278 in words is "eighty-seven billion, two hundred eighty-one million, six hundred eighteen thousand, two hundred seventy-eight".