1275776700329 has 2 divisors, whose sum is σ = 1275776700330. Its totient is φ = 1275776700328.

The previous prime is 1275776700271. The next prime is 1275776700383. The reversal of 1275776700329 is 9230076775721.

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., 1244233164304 + 31543536025 = 1115452^2 + 177605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1275776700329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1275776706329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637888350164 + 637888350165.

It is an arithmetic number, because the mean of its divisors is an integer number (637888350165).

Almost surely, 2^{1275776700329} is an apocalyptic number.

It is an amenable number.

1275776700329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275776700329 is an equidigital number, since it uses as much as digits as its factorization.

1275776700329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7779240, while the sum is 56.

The spelling of 1275776700329 in words is "one trillion, two hundred seventy-five billion, seven hundred seventy-six million, seven hundred thousand, three hundred twenty-nine".