647232880000 has 640 divisors, whose sum is σ = 1984692695040. Its totient is φ = 205286400000.

The previous prime is 647232879973. The next prime is 647232880003. The reversal of 647232880000 is 88232746.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647232880003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 399279190 + ... + 399280810.

It is an arithmetic number, because the mean of its divisors is an integer number (3101082336).

Almost surely, 2^647232880000 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 647232880000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (992346347520).

647232880000 is an abundant number, since it is smaller than the sum of its proper divisors (1337459815040).

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

647232880000 is a wasteful number, since it uses less digits than its factorization.

647232880000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716 (or 1689 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The spelling of 647232880000 in words is "six hundred forty-seven billion, two hundred thirty-two million, eight hundred eighty thousand".