2010721220664 has 64 divisors (see below), whose sum is σ = 5648848934400. Its totient is φ = 591784169856.

The previous prime is 2010721220593. The next prime is 2010721220689. The reversal of 2010721220664 is 4660221270102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140093244 + ... + 140107595.

It is an arithmetic number, because the mean of its divisors is an integer number (88263264600).

Almost surely, 2^{2010721220664} is an apocalyptic number.

2010721220664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2010721220664 is an abundant number, since it is smaller than the sum of its proper divisors (3638127713736).

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

2010721220664 is a wasteful number, since it uses less digits than its factorization.

2010721220664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280200884 (or 280200880 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

Adding to 2010721220664 its reverse (4660221270102), we get a palindrome (6670942490766).

The spelling of 2010721220664 in words is "two trillion, ten billion, seven hundred twenty-one million, two hundred twenty thousand, six hundred sixty-four".