275810778400667 has 4 divisors (see below), whose sum is σ = 275811320806320. Its totient is φ = 275810235995016.

The previous prime is 275810778400631. The next prime is 275810778400699. The reversal of 275810778400667 is 766004877018572.

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 275810778400667 - 2²⁰ = 275810777352091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 275810778400597 and 275810778400606.

It is not an unprimeable number, because it can be changed into a prime (275810778400607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270439367 + ... + 271457312.

It is an arithmetic number, because the mean of its divisors is an integer number (68952830201580).

Almost surely, 2^{275810778400667} is an apocalyptic number.

275810778400667 is a deficient number, since it is larger than the sum of its proper divisors (542405653).

275810778400667 is an equidigital number, since it uses as much as digits as its factorization.

275810778400667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542405652.

The product of its (nonzero) digits is 221276160, while the sum is 68.

The spelling of 275810778400667 in words is "two hundred seventy-five trillion, eight hundred ten billion, seven hundred seventy-eight million, four hundred thousand, six hundred sixty-seven".