551789355648 has 64 divisors (see below), whose sum is σ = 1465790649120. Its totient is φ = 183917214720.

The previous prime is 551789355641. The next prime is 551789355697. The reversal of 551789355648 is 846553987155.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (551789355641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6829986 + ... + 6910302.

Almost surely, 2^551789355648 is an apocalyptic number.

It is an amenable number.

551789355648 is an abundant number, since it is smaller than the sum of its proper divisors (914001293472).

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

551789355648 is a wasteful number, since it uses less digits than its factorization.

551789355648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98225 (or 98213 counting only the distinct ones).

The product of its digits is 181440000, while the sum is 66.

The spelling of 551789355648 in words is "five hundred fifty-one billion, seven hundred eighty-nine million, three hundred fifty-five thousand, six hundred forty-eight".