2061081736 has 64 divisors (see below), whose sum is σ = 4577184000. Its totient is φ = 851316480.

The previous prime is 2061081721. The next prime is 2061081739. The reversal of 2061081736 is 6371801602.

It is not an unprimeable number, because it can be changed into a prime (2061081739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1491766 + ... + 1493146.

It is an arithmetic number, because the mean of its divisors is an integer number (71518500).

Almost surely, 2^2061081736 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 2061081736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2288592000).

2061081736 is an abundant number, since it is smaller than the sum of its proper divisors (2516102264).

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

2061081736 is a wasteful number, since it uses less digits than its factorization.

2061081736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2342 (or 2338 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 2061081736 is about 45399.1380534917. The cubic root of 2061081736 is about 1272.6190060371.

The spelling of 2061081736 in words is "two billion, sixty-one million, eighty-one thousand, seven hundred thirty-six".