2102061756 has 24 divisors (see below), whose sum is σ = 4906217680. Its totient is φ = 700486272.

The previous prime is 2102061749. The next prime is 2102061757. The reversal of 2102061756 is 6571602012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102061757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21990 + ... + 68466.

Almost surely, 2^2102061756 is an apocalyptic number.

It is an amenable number.

2102061756 is an abundant number, since it is smaller than the sum of its proper divisors (2804155924).

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

2102061756 is a wasteful number, since it uses less digits than its factorization.

2102061756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50253 (or 50251 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 2102061756 is about 45848.2470330110. The cubic root of 2102061756 is about 1280.9981139073.

Adding to 2102061756 its reverse (6571602012), we get a palindrome (8673663768).

The spelling of 2102061756 in words is "two billion, one hundred two million, sixty-one thousand, seven hundred fifty-six".