551066505511 has 4 divisors (see below), whose sum is σ = 551117593000. Its totient is φ = 551015418024.

The previous prime is 551066505503. The next prime is 551066505523. The reversal of 551066505511 is 115505660155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 115505660155 = 5 ⋅23101132031.

It is a cyclic number.

It is not a de Polignac number, because 551066505511 - 2³ = 551066505503 is a prime.

It is a super-2 number, since 2×551066505511² (a number of 24 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 (551066505551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25527561 + ... + 25549138.

It is an arithmetic number, because the mean of its divisors is an integer number (137779398250).

Almost surely, 2^551066505511 is an apocalyptic number.

551066505511 is a deficient number, since it is larger than the sum of its proper divisors (51087489).

551066505511 is a wasteful number, since it uses less digits than its factorization.

551066505511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51087488.

The product of its (nonzero) digits is 112500, while the sum is 40.

The spelling of 551066505511 in words is "five hundred fifty-one billion, sixty-six million, five hundred five thousand, five hundred eleven".