2667665260021 has 8 divisors (see below), whose sum is σ = 2668725506304. Its totient is φ = 2666605233600.

The previous prime is 2667665260009. The next prime is 2667665260031. The reversal of 2667665260021 is 1200625667662.

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 2667665260021 - 2¹³ = 2667665251829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2667665260031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26747196 + ... + 26846746.

It is an arithmetic number, because the mean of its divisors is an integer number (333590688288).

Almost surely, 2^{2667665260021} is an apocalyptic number.

It is an amenable number.

2667665260021 is a deficient number, since it is larger than the sum of its proper divisors (1060246283).

2667665260021 is an equidigital number, since it uses as much as digits as its factorization.

2667665260021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109931.

The product of its (nonzero) digits is 2177280, while the sum is 49.

The spelling of 2667665260021 in words is "two trillion, six hundred sixty-seven billion, six hundred sixty-five million, two hundred sixty thousand, twenty-one".