2061655116 has 72 divisors (see below), whose sum is σ = 5149315584. Its totient is φ = 641783520.

The previous prime is 2061655091. The next prime is 2061655139. The reversal of 2061655116 is 6115561602.

2061655116 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 304221 + ... + 310923.

It is an arithmetic number, because the mean of its divisors is an integer number (71518272).

Almost surely, 2^2061655116 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 2061655116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2574657792).

2061655116 is an abundant number, since it is smaller than the sum of its proper divisors (3087660468).

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

2061655116 is a wasteful number, since it uses less digits than its factorization.

2061655116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6819 (or 6798 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 2061655116 is about 45405.4524919640. The cubic root of 2061655116 is about 1272.7370066349.

The spelling of 2061655116 in words is "two billion, sixty-one million, six hundred fifty-five thousand, one hundred sixteen".