551003263668 has 960 divisors, whose sum is σ = 1874573352960. Its totient is φ = 138568320000.

The previous prime is 551003263627. The next prime is 551003263709. The reversal of 551003263668 is 866362300155.

551003263668 is a `hidden beast` number, since 5 + 5 + 1 + 0 + 0 + 3 + 2 + 636 + 6 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (551003263627) and next prime (551003263709).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 1664662263 + ... + 1664662593.

It is an arithmetic number, because the mean of its divisors is an integer number (1952680576).

Almost surely, 2^551003263668 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 551003263668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (937286676480).

551003263668 is an abundant number, since it is smaller than the sum of its proper divisors (1323570089292).

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

551003263668 is a wasteful number, since it uses less digits than its factorization.

551003263668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 551003263668 in words is "five hundred fifty-one billion, three million, two hundred sixty-three thousand, six hundred sixty-eight".