20543322351 has 8 divisors (see below), whose sum is σ = 27454650624. Its totient is φ = 13663771160.

The previous prime is 20543322311. The next prime is 20543322361. The reversal of 20543322351 is 15322334502.

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 20543322351 - 2²⁵ = 20509767919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20543322311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7942761 + ... + 7945346.

It is an arithmetic number, because the mean of its divisors is an integer number (3431831328).

Almost surely, 2^20543322351 is an apocalyptic number.

20543322351 is a deficient number, since it is larger than the sum of its proper divisors (6911328273).

20543322351 is a wasteful number, since it uses less digits than its factorization.

20543322351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15888541.

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

Adding to 20543322351 its reverse (15322334502), we get a palindrome (35865656853).

The spelling of 20543322351 in words is "twenty billion, five hundred forty-three million, three hundred twenty-two thousand, three hundred fifty-one".