551845548155 has 16 divisors (see below), whose sum is σ = 722437920000. Its totient is φ = 401330033760.

The previous prime is 551845548131. The next prime is 551845548167.

551845548155 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 551845548155 - 2¹⁸ = 551845286011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551845548155.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1933346 + ... + 2200344.

It is an arithmetic number, because the mean of its divisors is an integer number (45152370000).

Almost surely, 2^551845548155 is an apocalyptic number.

551845548155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

551845548155 is a deficient number, since it is larger than the sum of its proper divisors (170592371845).

551845548155 is a wasteful number, since it uses less digits than its factorization.

551845548155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304594.

The product of its digits is 16000000, while the sum is 56.

The spelling of 551845548155 in words is "five hundred fifty-one billion, eight hundred forty-five million, five hundred forty-eight thousand, one hundred fifty-five".