6551986896 has 360 divisors, whose sum is σ = 23480830464. Its totient is φ = 1659087360.

The previous prime is 6551986879. The next prime is 6551986901. The reversal of 6551986896 is 6986891556.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 51590385 + ... + 51590511.

Almost surely, 2^6551986896 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 6551986896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11740415232).

6551986896 is an abundant number, since it is smaller than the sum of its proper divisors (16928843568).

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

6551986896 is a wasteful number, since it uses less digits than its factorization.

6551986896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 183 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 63.

The square root of 6551986896 is about 80944.3444349264. The cubic root of 6551986896 is about 1871.2177999902.

The spelling of 6551986896 in words is "six billion, five hundred fifty-one million, nine hundred eighty-six thousand, eight hundred ninety-six".