551587869816 has 32 divisors (see below), whose sum is σ = 1379641482960. Its totient is φ = 183773048832.

The previous prime is 551587869803. The next prime is 551587869829. The reversal of 551587869816 is 618968785155.

It is an interprime number because it is at equal distance from previous prime (551587869803) and next prime (551587869829).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5548105 + ... + 5646648.

Almost surely, 2^551587869816 is an apocalyptic number.

It is an amenable number.

551587869816 is an abundant number, since it is smaller than the sum of its proper divisors (828053613144).

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

551587869816 is a wasteful number, since it uses less digits than its factorization.

551587869816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11196815 (or 11196811 counting only the distinct ones).

The product of its digits is 145152000, while the sum is 69.

The spelling of 551587869816 in words is "five hundred fifty-one billion, five hundred eighty-seven million, eight hundred sixty-nine thousand, eight hundred sixteen".