87138883178 has 8 divisors (see below), whose sum is σ = 130776656868. Its totient is φ = 43546664224.

The previous prime is 87138883061. The next prime is 87138883189.

87138883178 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 86651930689 + 486952489 = 294367^2 + 22067^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 87138883178.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11383901 + ... + 11391552.

Almost surely, 2^87138883178 is an apocalyptic number.

87138883178 is a deficient number, since it is larger than the sum of its proper divisors (43637773690).

87138883178 is a wasteful number, since it uses less digits than its factorization.

87138883178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22777368.

The product of its digits is 14450688, while the sum is 62.

The spelling of 87138883178 in words is "eighty-seven billion, one hundred thirty-eight million, eight hundred eighty-three thousand, one hundred seventy-eight".