20555443214 has 4 divisors (see below), whose sum is σ = 30833164824. Its totient is φ = 10277721606.

The previous prime is 20555443211. The next prime is 20555443217. The reversal of 20555443214 is 41234455502.

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

It is an interprime number because it is at equal distance from previous prime (20555443211) and next prime (20555443217).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20555443211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5138860802 + ... + 5138860805.

It is an arithmetic number, because the mean of its divisors is an integer number (7708291206).

Almost surely, 2^20555443214 is an apocalyptic number.

20555443214 is a deficient number, since it is larger than the sum of its proper divisors (10277721610).

20555443214 is a wasteful number, since it uses less digits than its factorization.

20555443214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10277721609.

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 20555443214 its reverse (41234455502), we get a palindrome (61789898716).

The spelling of 20555443214 in words is "twenty billion, five hundred fifty-five million, four hundred forty-three thousand, two hundred fourteen".