84111820223 has 4 divisors (see below), whose sum is σ = 84581718840. Its totient is φ = 83641921608.

The previous prime is 84111820181. The next prime is 84111820277. The reversal of 84111820223 is 32202811148.

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 84111820223 - 2¹⁸ = 84111558079 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84111820223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84111820283) 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, 234949040 + ... + 234949397.

It is an arithmetic number, because the mean of its divisors is an integer number (21145429710).

Almost surely, 2^84111820223 is an apocalyptic number.

84111820223 is a deficient number, since it is larger than the sum of its proper divisors (469898617).

84111820223 is a wasteful number, since it uses less digits than its factorization.

84111820223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469898616.

The product of its (nonzero) digits is 6144, while the sum is 32.

The spelling of 84111820223 in words is "eighty-four billion, one hundred eleven million, eight hundred twenty thousand, two hundred twenty-three".