2664161775266 has 8 divisors (see below), whose sum is σ = 3996262307484. Its totient is φ = 1332074339440.

The previous prime is 2664161775263. The next prime is 2664161775269. The reversal of 2664161775266 is 6625771614662.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2664161775263) and next prime (2664161775269).

It can be written as a sum of positive squares in 2 ways, for example, as 2633333790025 + 30827985241 = 1622755^2 + 175579^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2664161775263) 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 3 ways as a sum of consecutive naturals, for example, 2748665 + ... + 3589356.

Almost surely, 2^{2664161775266} is an apocalyptic number.

2664161775266 is a deficient number, since it is larger than the sum of its proper divisors (1332100532218).

2664161775266 is a wasteful number, since it uses less digits than its factorization.

2664161775266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6548196.

The product of its digits is 30481920, while the sum is 59.

The spelling of 2664161775266 in words is "two trillion, six hundred sixty-four billion, one hundred sixty-one million, seven hundred seventy-five thousand, two hundred sixty-six".