647354240000 has 440 divisors, whose sum is σ = 1802190426960. Its totient is φ = 230694912000.

The previous prime is 647354239999. The next prime is 647354240003. The reversal of 647354240000 is 42453746.

It is not an unprimeable number, because it can be changed into a prime (647354240003) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 241278659 + ... + 241281341.

It is an arithmetic number, because the mean of its divisors is an integer number (4095887334).

Almost surely, 2^647354240000 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 647354240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (901095213480).

647354240000 is an abundant number, since it is smaller than the sum of its proper divisors (1154836186960).

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

647354240000 is a wasteful number, since it uses less digits than its factorization.

647354240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765 (or 2732 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 35.

Adding to 647354240000 its reverse (42453746), we get a palindrome (647396693746).

The spelling of 647354240000 in words is "six hundred forty-seven billion, three hundred fifty-four million, two hundred forty thousand".