2145111775439 has 2 divisors, whose sum is σ = 2145111775440. Its totient is φ = 2145111775438.

The previous prime is 2145111775361. The next prime is 2145111775481. The reversal of 2145111775439 is 9345771115412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2145111775439 - 2¹² = 2145111771343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2145111735439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072555887719 + 1072555887720.

It is an arithmetic number, because the mean of its divisors is an integer number (1072555887720).

Almost surely, 2^{2145111775439} is an apocalyptic number.

2145111775439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145111775439 is an equidigital number, since it uses as much as digits as its factorization.

2145111775439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1058400, while the sum is 50.

The spelling of 2145111775439 in words is "two trillion, one hundred forty-five billion, one hundred eleven million, seven hundred seventy-five thousand, four hundred thirty-nine".