551245055122123 has 4 divisors (see below), whose sum is σ = 551255216188248. Its totient is φ = 551234894056000.

The previous prime is 551245055122109. The next prime is 551245055122127. The reversal of 551245055122123 is 321221550542155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 551245055122123 - 2³³ = 551236465187531 is a prime.

It is a super-2 number, since 2×551245055122123² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 551245055122123.

It is not an unprimeable number, because it can be changed into a prime (551245055122127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5080451686 + ... + 5080560187.

It is an arithmetic number, because the mean of its divisors is an integer number (137813804047062).

Almost surely, 2^{551245055122123} is an apocalyptic number.

551245055122123 is a deficient number, since it is larger than the sum of its proper divisors (10161066125).

551245055122123 is a wasteful number, since it uses less digits than its factorization.

551245055122123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10161066124.

The product of its (nonzero) digits is 600000, while the sum is 43.

The spelling of 551245055122123 in words is "five hundred fifty-one trillion, two hundred forty-five billion, fifty-five million, one hundred twenty-two thousand, one hundred twenty-three".