551963047680 has 864 divisors, whose sum is σ = 2266593235200. Its totient is φ = 126748385280.

The previous prime is 551963047667. The next prime is 551963047703. The reversal of 551963047680 is 86740369155.

551963047680 is a `hidden beast` number, since 5 + 5 + 1 + 96 + 3 + 0 + 476 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 79449967 + ... + 79456913.

It is an arithmetic number, because the mean of its divisors is an integer number (2623371800).

Almost surely, 2^551963047680 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 551963047680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1133296617600).

551963047680 is an abundant number, since it is smaller than the sum of its proper divisors (1714630187520).

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

551963047680 is a wasteful number, since it uses less digits than its factorization.

551963047680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7018 (or 6987 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 551963047680 in words is "five hundred fifty-one billion, nine hundred sixty-three million, forty-seven thousand, six hundred eighty".