84166227643 has 4 divisors (see below), whose sum is σ = 85754269728. Its totient is φ = 82578185560.

The previous prime is 84166227641. The next prime is 84166227653. The reversal of 84166227643 is 34672266148.

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

It is a cyclic number.

It is not a de Polignac number, because 84166227643 - 2¹ = 84166227641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84166227641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 794020963 + ... + 794021068.

It is an arithmetic number, because the mean of its divisors is an integer number (21438567432).

Almost surely, 2^84166227643 is an apocalyptic number.

84166227643 is a deficient number, since it is larger than the sum of its proper divisors (1588042085).

84166227643 is a wasteful number, since it uses less digits than its factorization.

84166227643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588042084.

The product of its digits is 2322432, while the sum is 49.

The spelling of 84166227643 in words is "eighty-four billion, one hundred sixty-six million, two hundred twenty-seven thousand, six hundred forty-three".