20842770084446 has 8 divisors (see below), whose sum is σ = 31264779698280. Its totient is φ = 10421176851688.

The previous prime is 20842770084443. The next prime is 20842770084469. The reversal of 20842770084446 is 64448007724802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20842770084446² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20842770084391 and 20842770084400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20842770084443) 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, 103970096 + ... + 104170371.

It is an arithmetic number, because the mean of its divisors is an integer number (3908097462285).

Almost surely, 2^{20842770084446} is an apocalyptic number.

20842770084446 is a deficient number, since it is larger than the sum of its proper divisors (10422009613834).

20842770084446 is a wasteful number, since it uses less digits than its factorization.

20842770084446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208190538.

The product of its (nonzero) digits is 19267584, while the sum is 56.

The spelling of 20842770084446 in words is "twenty trillion, eight hundred forty-two billion, seven hundred seventy million, eighty-four thousand, four hundred forty-six".