551005556101 has 24 divisors (see below), whose sum is σ = 753022587744. Its totient is φ = 396327667680.

The previous prime is 551005556093. The next prime is 551005556161. The reversal of 551005556101 is 101655500155.

It is not a de Polignac number, because 551005556101 - 2³ = 551005556093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551005556161) 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 23 ways as a sum of consecutive naturals, for example, 39311215 + ... + 39325228.

It is an arithmetic number, because the mean of its divisors is an integer number (31375941156).

Almost surely, 2^551005556101 is an apocalyptic number.

It is an amenable number.

551005556101 is a deficient number, since it is larger than the sum of its proper divisors (202017031643).

551005556101 is a wasteful number, since it uses less digits than its factorization.

551005556101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78636481 (or 78636474 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 34.

The spelling of 551005556101 in words is "five hundred fifty-one billion, five million, five hundred fifty-six thousand, one hundred one".