87223857166 has 4 divisors (see below), whose sum is σ = 130835785752. Its totient is φ = 43611928582.

The previous prime is 87223857151. The next prime is 87223857169. The reversal of 87223857166 is 66175832278.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87223857169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21805964290 + ... + 21805964293.

It is an arithmetic number, because the mean of its divisors is an integer number (32708946438).

Almost surely, 2^87223857166 is an apocalyptic number.

87223857166 is a deficient number, since it is larger than the sum of its proper divisors (43611928586).

87223857166 is a wasteful number, since it uses less digits than its factorization.

87223857166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43611928585.

The product of its digits is 6773760, while the sum is 55.

The spelling of 87223857166 in words is "eighty-seven billion, two hundred twenty-three million, eight hundred fifty-seven thousand, one hundred sixty-six".