12106768777 has 2 divisors, whose sum is σ = 12106768778. Its totient is φ = 12106768776.

The previous prime is 12106768771. The next prime is 12106768781. The reversal of 12106768777 is 77786760121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11835046521 + 271722256 = 108789^2 + 16484^2 .

It is a cyclic number.

It is not a de Polignac number, because 12106768777 - 2¹¹ = 12106766729 is a prime.

It is not a weakly prime, because it can be changed into another prime (12106768771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6053384388 + 6053384389.

It is an arithmetic number, because the mean of its divisors is an integer number (6053384389).

Almost surely, 2^12106768777 is an apocalyptic number.

It is an amenable number.

12106768777 is a deficient number, since it is larger than the sum of its proper divisors (1).

12106768777 is an equidigital number, since it uses as much as digits as its factorization.

12106768777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1382976, while the sum is 52.

The spelling of 12106768777 in words is "twelve billion, one hundred six million, seven hundred sixty-eight thousand, seven hundred seventy-seven".