2065105720 has 16 divisors (see below), whose sum is σ = 4646487960. Its totient is φ = 826042272.

The previous prime is 2065105711. The next prime is 2065105723. The reversal of 2065105720 is 275015602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2065105723) 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, 25813782 + ... + 25813861.

Almost surely, 2^2065105720 is an apocalyptic number.

2065105720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2065105720 is an abundant number, since it is smaller than the sum of its proper divisors (2581382240).

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

2065105720 is a wasteful number, since it uses less digits than its factorization.

2065105720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51627654 (or 51627650 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 2065105720 is about 45443.4342892348. The cubic root of 2065105720 is about 1273.4466732685.

The spelling of 2065105720 in words is "two billion, sixty-five million, one hundred five thousand, seven hundred twenty".