6651279360 has 528 divisors, whose sum is σ = 26114863320. Its totient is φ = 1612431360.

The previous prime is 6651279347. The next prime is 6651279389. The reversal of 6651279360 is 639721566.

6651279360 is a `hidden beast` number, since 6 + 6 + 512 + 79 + 3 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (528).

It is a super-4 number, since 4×6651279360⁴ (a number of 40 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 43 ways as a sum of consecutive naturals, for example, 604661755 + ... + 604661765.

Almost surely, 2^6651279360 is an apocalyptic number.

6651279360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6651279360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13057431660).

6651279360 is an abundant number, since it is smaller than the sum of its proper divisors (19463583960).

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

6651279360 is an frugal number, since it uses more digits than its factorization.

6651279360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68 (or 21 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 6651279360 is about 81555.3760337110. The cubic root of 6651279360 is about 1880.6229412935.

The spelling of 6651279360 in words is "six billion, six hundred fifty-one million, two hundred seventy-nine thousand, three hundred sixty".