551864468155 has 128 divisors (see below), whose sum is σ = 918376704000. Its totient is φ = 307285954560.

The previous prime is 551864468131. The next prime is 551864468171.

551864468155 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 551864468155 - 2¹¹ = 551864466107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551864468155.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 19350096 + ... + 19378594.

It is an arithmetic number, because the mean of its divisors is an integer number (7174818000).

Almost surely, 2^551864468155 is an apocalyptic number.

551864468155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

551864468155 is a deficient number, since it is larger than the sum of its proper divisors (366512235845).

551864468155 is a wasteful number, since it uses less digits than its factorization.

551864468155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28661.

The product of its digits is 23040000, while the sum is 58.

The spelling of 551864468155 in words is "five hundred fifty-one billion, eight hundred sixty-four million, four hundred sixty-eight thousand, one hundred fifty-five".