1275377754149 has 2 divisors, whose sum is σ = 1275377754150. Its totient is φ = 1275377754148.

The previous prime is 1275377754139. The next prime is 1275377754151. The reversal of 1275377754149 is 9414577735721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1208640781924 + 66736972225 = 1099382^2 + 258335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1275377754149 is a prime.

Together with 1275377754151, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1275377754091 and 1275377754100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1275377754139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637688877074 + 637688877075.

It is an arithmetic number, because the mean of its divisors is an integer number (637688877075).

Almost surely, 2^{1275377754149} is an apocalyptic number.

It is an amenable number.

1275377754149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275377754149 is an equidigital number, since it uses as much as digits as its factorization.

1275377754149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51861600, while the sum is 62.

The spelling of 1275377754149 in words is "one trillion, two hundred seventy-five billion, three hundred seventy-seven million, seven hundred fifty-four thousand, one hundred forty-nine".