551843717380 has 96 divisors (see below), whose sum is σ = 1231151201280. Its totient is φ = 207058083840.

The previous prime is 551843717339. The next prime is 551843717413. The reversal of 551843717380 is 83717348155.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 258958915 + ... + 258961045.

It is an arithmetic number, because the mean of its divisors is an integer number (12824491680).

Almost surely, 2^551843717380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551843717380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (615575600640).

551843717380 is an abundant number, since it is smaller than the sum of its proper divisors (679307483900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551843717380 is a wasteful number, since it uses less digits than its factorization.

551843717380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4349 (or 4347 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 52.

The spelling of 551843717380 in words is "five hundred fifty-one billion, eight hundred forty-three million, seven hundred seventeen thousand, three hundred eighty".