2102061757 has 2 divisors, whose sum is σ = 2102061758. Its totient is φ = 2102061756.

The previous prime is 2102061749. The next prime is 2102061799. The reversal of 2102061757 is 7571602012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1979716036 + 122345721 = 44494^2 + 11061^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102061757 - 2³ = 2102061749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102061707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051030878 + 1051030879.

It is an arithmetic number, because the mean of its divisors is an integer number (1051030879).

Almost surely, 2^2102061757 is an apocalyptic number.

It is an amenable number.

2102061757 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102061757 is an equidigital number, since it uses as much as digits as its factorization.

2102061757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 2102061757 is about 45848.2470439165. The cubic root of 2102061757 is about 1280.9981141104.

Adding to 2102061757 its reverse (7571602012), we get a palindrome (9673663769).

The spelling of 2102061757 in words is "two billion, one hundred two million, sixty-one thousand, seven hundred fifty-seven".