551105605503 has 24 divisors (see below), whose sum is σ = 811013461856. Its totient is φ = 360522187200.

The previous prime is 551105605433. The next prime is 551105605529. The reversal of 551105605503 is 305506501155.

551105605503 is a `hidden beast` number, since 5 + 51 + 1 + 0 + 56 + 0 + 550 + 3 = 666.

It is not a de Polignac number, because 551105605503 - 2¹³ = 551105597311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551105605543) 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 23 ways as a sum of consecutive naturals, for example, 961075 + ... + 1423332.

Almost surely, 2^551105605503 is an apocalyptic number.

551105605503 is a deficient number, since it is larger than the sum of its proper divisors (259907856353).

551105605503 is a wasteful number, since it uses less digits than its factorization.

551105605503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2384895 (or 2384892 counting only the distinct ones).

The product of its (nonzero) digits is 56250, while the sum is 36.

The spelling of 551105605503 in words is "five hundred fifty-one billion, one hundred five million, six hundred five thousand, five hundred three".