1275353664455 has 16 divisors (see below), whose sum is σ = 1648472125440. Its totient is φ = 941615186688.

The previous prime is 1275353664449. The next prime is 1275353664461. The reversal of 1275353664455 is 5544663535721.

It is an interprime number because it is at equal distance from previous prime (1275353664449) and next prime (1275353664461).

It is a cyclic number.

It is not a de Polignac number, because 1275353664455 - 2⁶ = 1275353664391 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1275353664455.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1586375 + ... + 2251064.

It is an arithmetic number, because the mean of its divisors is an integer number (103029507840).

Almost surely, 2^{1275353664455} is an apocalyptic number.

1275353664455 is a deficient number, since it is larger than the sum of its proper divisors (373118460985).

1275353664455 is a wasteful number, since it uses less digits than its factorization.

1275353664455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3842570.

The product of its digits is 45360000, while the sum is 56.

The spelling of 1275353664455 in words is "one trillion, two hundred seventy-five billion, three hundred fifty-three million, six hundred sixty-four thousand, four hundred fifty-five".