80871229178 has 4 divisors (see below), whose sum is σ = 121306843770. Its totient is φ = 40435614588.

The previous prime is 80871229171. The next prime is 80871229181. The reversal of 80871229178 is 87192217808.

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., 79139254489 + 1731974689 = 281317^2 + 41617^2 .

It is not an unprimeable number, because it can be changed into a prime (80871229171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20217807293 + ... + 20217807296.

Almost surely, 2^80871229178 is an apocalyptic number.

80871229178 is a deficient number, since it is larger than the sum of its proper divisors (40435614592).

80871229178 is a wasteful number, since it uses less digits than its factorization.

80871229178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40435614591.

The product of its (nonzero) digits is 903168, while the sum is 53.

The spelling of 80871229178 in words is "eighty billion, eight hundred seventy-one million, two hundred twenty-nine thousand, one hundred seventy-eight".