210102000000077 has 2 divisors, whose sum is σ = 210102000000078. Its totient is φ = 210102000000076.

The previous prime is 210102000000073. The next prime is 210102000000107. The reversal of 210102000000077 is 770000000201012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195583049980201 + 14518950019876 = 13985101^2 + 3810374^2 .

It is a cyclic number.

It is not a de Polignac number, because 210102000000077 - 2² = 210102000000073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210101999999995 and 210102000000058.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210102000000071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105051000000038 + 105051000000039.

It is an arithmetic number, because the mean of its divisors is an integer number (105051000000039).

Almost surely, 2^{210102000000077} is an apocalyptic number.

It is an amenable number.

210102000000077 is a deficient number, since it is larger than the sum of its proper divisors (1).

210102000000077 is an equidigital number, since it uses as much as digits as its factorization.

210102000000077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196, while the sum is 20.

Adding to 210102000000077 its reverse (770000000201012), we get a palindrome (980102000201089).

The spelling of 210102000000077 in words is "two hundred ten trillion, one hundred two billion, seventy-seven", and thus it is an aban number.