5351066864640 has 528 divisors, whose sum is σ = 21201401812032. Its totient is φ = 1222446809088.

The previous prime is 5351066864621. The next prime is 5351066864719. The reversal of 5351066864640 is 464686601535.

5351066864640 is a `hidden beast` number, since 5 + 3 + 510 + 6 + 6 + 8 + 64 + 64 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 863490022 + ... + 863496218.

Almost surely, 2^{5351066864640} 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 5351066864640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10600700906016).

5351066864640 is an abundant number, since it is smaller than the sum of its proper divisors (15850334947392).

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

5351066864640 is a wasteful number, since it uses less digits than its factorization.

5351066864640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8912 (or 8891 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 54.

The spelling of 5351066864640 in words is "five trillion, three hundred fifty-one billion, sixty-six million, eight hundred sixty-four thousand, six hundred forty".