551719917155 has 16 divisors (see below), whose sum is σ = 753653769984. Its totient is φ = 383805158880.

The previous prime is 551719917149. The next prime is 551719917157.

551719917155 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 551719917155 - 2⁴ = 551719917139 is a prime.

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 551719917155.

It is not an unprimeable number, because it can be changed into a prime (551719917157) 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 15 ways as a sum of consecutive naturals, for example, 218069849 + ... + 218072378.

It is an arithmetic number, because the mean of its divisors is an integer number (47103360624).

Almost surely, 2^551719917155 is an apocalyptic number.

551719917155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

551719917155 is a deficient number, since it is larger than the sum of its proper divisors (201933852829).

551719917155 is a wasteful number, since it uses less digits than its factorization.

551719917155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436142266.

The product of its digits is 2480625, while the sum is 56.

The spelling of 551719917155 in words is "five hundred fifty-one billion, seven hundred nineteen million, nine hundred seventeen thousand, one hundred fifty-five".