87127070986 has 4 divisors (see below), whose sum is σ = 130690606482. Its totient is φ = 43563535492.

The previous prime is 87127070939. The next prime is 87127070999. The reversal of 87127070986 is 68907072178.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 78285242025 + 8841828961 = 279795^2 + 94031^2 .

It is a super-2 number, since 2×87127070986² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21781767745 + ... + 21781767748.

Almost surely, 2^87127070986 is an apocalyptic number.

87127070986 is a deficient number, since it is larger than the sum of its proper divisors (43563535496).

87127070986 is a wasteful number, since it uses less digits than its factorization.

87127070986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43563535495.

The product of its (nonzero) digits is 2370816, while the sum is 55.

The spelling of 87127070986 in words is "eighty-seven billion, one hundred twenty-seven million, seventy thousand, nine hundred eighty-six".