2011061616 has 20 divisors (see below), whose sum is σ = 5195242632. Its totient is φ = 670353856.

The previous prime is 2011061587. The next prime is 2011061617. The reversal of 2011061616 is 6161601102.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011061617) 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, 20948511 + ... + 20948606.

Almost surely, 2^2011061616 is an apocalyptic number.

It is an amenable number.

2011061616 is an abundant number, since it is smaller than the sum of its proper divisors (3184181016).

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

2011061616 is a wasteful number, since it uses less digits than its factorization.

2011061616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41897128 (or 41897122 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 2011061616 is about 44844.8616454550. The cubic root of 2011061616 is about 1262.2395745032.

Adding to 2011061616 its reverse (6161601102), we get a palindrome (8172662718).

The spelling of 2011061616 in words is "two billion, eleven million, sixty-one thousand, six hundred sixteen".