2666291029 has 4 divisors (see below), whose sum is σ = 2710000780. Its totient is φ = 2622581280.

The previous prime is 2666290969. The next prime is 2666291053. The reversal of 2666291029 is 9201926662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 504227025 + 2162064004 = 22455^2 + 46498^2 .

It is a cyclic number.

It is not a de Polignac number, because 2666291029 - 2⁷ = 2666290901 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 (2666291729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21854784 + ... + 21854905.

It is an arithmetic number, because the mean of its divisors is an integer number (677500195).

Almost surely, 2^2666291029 is an apocalyptic number.

It is an amenable number.

2666291029 is a deficient number, since it is larger than the sum of its proper divisors (43709751).

2666291029 is an equidigital number, since it uses as much as digits as its factorization.

2666291029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43709750.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 2666291029 is about 51636.1407252711. The cubic root of 2666291029 is about 1386.6574324908.

The spelling of 2666291029 in words is "two billion, six hundred sixty-six million, two hundred ninety-one thousand, twenty-nine".