551320213423 has 32 divisors (see below), whose sum is σ = 654232320000. Its totient is φ = 464269347360.

The previous prime is 551320213417. The next prime is 551320213463. The reversal of 551320213423 is 324312023155.

It is not a de Polignac number, because 551320213423 - 2¹³ = 551320205231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551320213463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37653738 + ... + 37668376.

It is an arithmetic number, because the mean of its divisors is an integer number (20444760000).

Almost surely, 2^551320213423 is an apocalyptic number.

551320213423 is a deficient number, since it is larger than the sum of its proper divisors (102912106577).

551320213423 is a wasteful number, since it uses less digits than its factorization.

551320213423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16580 (or 16566 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 551320213423 its reverse (324312023155), we get a palindrome (875632236578).

The spelling of 551320213423 in words is "five hundred fifty-one billion, three hundred twenty million, two hundred thirteen thousand, four hundred twenty-three".