551328469889 has 16 divisors (see below), whose sum is σ = 579117369600. Its totient is φ = 524406669696.

The previous prime is 551328469849. The next prime is 551328469903. The reversal of 551328469889 is 988964823155.

It is a cyclic number.

It is not a de Polignac number, because 551328469889 - 2²⁰ = 551327421313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551328469849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 863654 + ... + 1359615.

It is an arithmetic number, because the mean of its divisors is an integer number (36194835600).

Almost surely, 2^551328469889 is an apocalyptic number.

It is an amenable number.

551328469889 is a deficient number, since it is larger than the sum of its proper divisors (27788899711).

551328469889 is a wasteful number, since it uses less digits than its factorization.

551328469889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223464.

The product of its digits is 149299200, while the sum is 68.

The spelling of 551328469889 in words is "five hundred fifty-one billion, three hundred twenty-eight million, four hundred sixty-nine thousand, eight hundred eighty-nine".