2775260391665 has 8 divisors (see below), whose sum is σ = 3333829173120. Its totient is φ = 2217863844592.

The previous prime is 2775260391661. The next prime is 2775260391667. The reversal of 2775260391665 is 5661930625772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2775260391665 - 2² = 2775260391661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2775260391661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293053385 + ... + 293062854.

It is an arithmetic number, because the mean of its divisors is an integer number (416728646640).

Almost surely, 2^{2775260391665} is an apocalyptic number.

It is an amenable number.

2775260391665 is a deficient number, since it is larger than the sum of its proper divisors (558568781455).

2775260391665 is an equidigital number, since it uses as much as digits as its factorization.

2775260391665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586117191.

The product of its (nonzero) digits is 28576800, while the sum is 59.

The spelling of 2775260391665 in words is "two trillion, seven hundred seventy-five billion, two hundred sixty million, three hundred ninety-one thousand, six hundred sixty-five".