20551322343 has 8 divisors (see below), whose sum is σ = 27405554688. Its totient is φ = 13698985784.

The previous prime is 20551322329. The next prime is 20551322353. The reversal of 20551322343 is 34322315502.

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

It is a cyclic number.

It is not a de Polignac number, because 20551322343 - 2¹⁴ = 20551305959 is a prime.

It is a super-4 number, since 4×20551322343⁴ (a number of 42 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20551322343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20551322353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 448455 + ... + 492152.

It is an arithmetic number, because the mean of its divisors is an integer number (3425694336).

Almost surely, 2^20551322343 is an apocalyptic number.

20551322343 is a deficient number, since it is larger than the sum of its proper divisors (6854232345).

20551322343 is an equidigital number, since it uses as much as digits as its factorization.

20551322343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947893.

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 20551322343 its reverse (34322315502), we get a palindrome (54873637845).

The spelling of 20551322343 in words is "twenty billion, five hundred fifty-one million, three hundred twenty-two thousand, three hundred forty-three".