2051642077 has 2 divisors, whose sum is σ = 2051642078. Its totient is φ = 2051642076.

The previous prime is 2051642063. The next prime is 2051642081. The reversal of 2051642077 is 7702461502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1195845561 + 855796516 = 34581^2 + 29254^2 .

It is a cyclic number.

It is not a de Polignac number, because 2051642077 - 2¹¹ = 2051640029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2051642017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025821038 + 1025821039.

It is an arithmetic number, because the mean of its divisors is an integer number (1025821039).

Almost surely, 2^2051642077 is an apocalyptic number.

It is an amenable number.

2051642077 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051642077 is an equidigital number, since it uses as much as digits as its factorization.

2051642077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 2051642077 is about 45295.0557677105. The cubic root of 2051642077 is about 1270.6731870288.

The spelling of 2051642077 in words is "two billion, fifty-one million, six hundred forty-two thousand, seventy-seven".