551513020334423 has 24 divisors (see below), whose sum is σ = 665143243620480. Its totient is φ = 455478524948160.

The previous prime is 551513020334347. The next prime is 551513020334447. The reversal of 551513020334423 is 324433020315155.

It is not a de Polignac number, because 551513020334423 - 2¹⁰ = 551513020333399 is a prime.

It is a super-2 number, since 2×551513020334423² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551513020334453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 792395336 + ... + 793091037.

It is an arithmetic number, because the mean of its divisors is an integer number (27714301817520).

Almost surely, 2^{551513020334423} is an apocalyptic number.

551513020334423 is a deficient number, since it is larger than the sum of its proper divisors (113630223286057).

551513020334423 is a wasteful number, since it uses less digits than its factorization.

551513020334423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585486647 (or 1585486640 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 41.

Adding to 551513020334423 its reverse (324433020315155), we get a palindrome (875946040649578).

The spelling of 551513020334423 in words is "five hundred fifty-one trillion, five hundred thirteen billion, twenty million, three hundred thirty-four thousand, four hundred twenty-three".