1277645107111 has 2 divisors, whose sum is σ = 1277645107112. Its totient is φ = 1277645107110.

The previous prime is 1277645107073. The next prime is 1277645107121. The reversal of 1277645107111 is 1117015467721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1277645107111 - 2¹¹ = 1277645105063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1277645107121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638822553555 + 638822553556.

It is an arithmetic number, because the mean of its divisors is an integer number (638822553556).

Almost surely, 2^{1277645107111} is an apocalyptic number.

1277645107111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1277645107111 is an equidigital number, since it uses as much as digits as its factorization.

1277645107111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82320, while the sum is 43.

The spelling of 1277645107111 in words is "one trillion, two hundred seventy-seven billion, six hundred forty-five million, one hundred seven thousand, one hundred eleven".