551948209668 has 120 divisors (see below), whose sum is σ = 1554166533920. Its totient is φ = 170245877760.

The previous prime is 551948209643. The next prime is 551948209669. The reversal of 551948209668 is 866902849155.

551948209668 is a `hidden beast` number, since 5 + 5 + 1 + 9 + 482 + 0 + 96 + 68 = 666.

It is not an unprimeable number, because it can be changed into a prime (551948209669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 777853 + ... + 1307268.

Almost surely, 2^551948209668 is an apocalyptic number.

It is an amenable number.

551948209668 is an abundant number, since it is smaller than the sum of its proper divisors (1002218324252).

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

551948209668 is a wasteful number, since it uses less digits than its factorization.

551948209668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085199 (or 2085188 counting only the distinct ones).

The product of its (nonzero) digits is 37324800, while the sum is 63.

The spelling of 551948209668 in words is "five hundred fifty-one billion, nine hundred forty-eight million, two hundred nine thousand, six hundred sixty-eight".