2061211668 has 12 divisors (see below), whose sum is σ = 4809493920. Its totient is φ = 687070552.

The previous prime is 2061211667. The next prime is 2061211687. The reversal of 2061211668 is 8661121602.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061211667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85883808 + ... + 85883831.

It is an arithmetic number, because the mean of its divisors is an integer number (400791160).

Almost surely, 2^2061211668 is an apocalyptic number.

It is an amenable number.

2061211668 is an abundant number, since it is smaller than the sum of its proper divisors (2748282252).

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

2061211668 is a wasteful number, since it uses less digits than its factorization.

2061211668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171767646 (or 171767644 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 2061211668 is about 45400.5690272710. The cubic root of 2061211668 is about 1272.6457477322.

The spelling of 2061211668 in words is "two billion, sixty-one million, two hundred eleven thousand, six hundred sixty-eight".