1275377754139 has 2 divisors, whose sum is σ = 1275377754140. Its totient is φ = 1275377754138.

The previous prime is 1275377754137. The next prime is 1275377754149. The reversal of 1275377754139 is 9314577735721.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1275377754139 - 2¹ = 1275377754137 is a prime.

Together with 1275377754137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1275377754137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637688877069 + 637688877070.

It is an arithmetic number, because the mean of its divisors is an integer number (637688877070).

Almost surely, 2^{1275377754139} is an apocalyptic number.

1275377754139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275377754139 is an equidigital number, since it uses as much as digits as its factorization.

1275377754139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38896200, while the sum is 61.

The spelling of 1275377754139 in words is "one trillion, two hundred seventy-five billion, three hundred seventy-seven million, seven hundred fifty-four thousand, one hundred thirty-nine".