4221648641730 has 128 divisors (see below), whose sum is σ = 10944228556800. Its totient is φ = 1036044875520.

The previous prime is 4221648641729. The next prime is 4221648641747. The reversal of 4221648641730 is 371468461224.

It is a self number, because there is not a number n which added to its sum of digits gives 4221648641730.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 548333421 + ... + 548341119.

It is an arithmetic number, because the mean of its divisors is an integer number (85501785600).

Almost surely, 2^{4221648641730} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4221648641730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5472114278400).

4221648641730 is an abundant number, since it is smaller than the sum of its proper divisors (6722579915070).

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

4221648641730 is a wasteful number, since it uses less digits than its factorization.

4221648641730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11776.

The product of its (nonzero) digits is 1548288, while the sum is 48.

The spelling of 4221648641730 in words is "four trillion, two hundred twenty-one billion, six hundred forty-eight million, six hundred forty-one thousand, seven hundred thirty".