21842185059355 has 4 divisors (see below), whose sum is σ = 26210622071232. Its totient is φ = 17473748047480.

The previous prime is 21842185059347. The next prime is 21842185059407. The reversal of 21842185059355 is 55395058124812.

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

It is not a de Polignac number, because 21842185059355 - 2³ = 21842185059347 is a prime.

It is a super-2 number, since 2×21842185059355² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 21842185059355.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2184218505931 + ... + 2184218505940.

It is an arithmetic number, because the mean of its divisors is an integer number (6552655517808).

Almost surely, 2^{21842185059355} is an apocalyptic number.

21842185059355 is a deficient number, since it is larger than the sum of its proper divisors (4368437011877).

21842185059355 is an equidigital number, since it uses as much as digits as its factorization.

21842185059355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4368437011876.

The product of its (nonzero) digits is 17280000, while the sum is 58.

The spelling of 21842185059355 in words is "twenty-one trillion, eight hundred forty-two billion, one hundred eighty-five million, fifty-nine thousand, three hundred fifty-five".