1275402750379 has 4 divisors (see below), whose sum is σ = 1275560002080. Its totient is φ = 1275245498680.

The previous prime is 1275402750373. The next prime is 1275402750407. The reversal of 1275402750379 is 9730572045721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1275402750379 - 2¹⁷ = 1275402619307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1275402750373) 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 in 3 ways as a sum of consecutive naturals, for example, 78613684 + ... + 78629905.

It is an arithmetic number, because the mean of its divisors is an integer number (318890000520).

Almost surely, 2^{1275402750379} is an apocalyptic number.

1275402750379 is a deficient number, since it is larger than the sum of its proper divisors (157251701).

1275402750379 is an equidigital number, since it uses as much as digits as its factorization.

1275402750379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157251700.

The product of its (nonzero) digits is 3704400, while the sum is 52.

The spelling of 1275402750379 in words is "one trillion, two hundred seventy-five billion, four hundred two million, seven hundred fifty thousand, three hundred seventy-nine".