2725771666 has 16 divisors (see below), whose sum is σ = 4115160000. Its totient is φ = 1354080528.

The previous prime is 2725771651. The next prime is 2725771667. The reversal of 2725771666 is 6661775272.

It is not an unprimeable number, because it can be changed into a prime (2725771667) 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, 190635 + ... + 204433.

It is an arithmetic number, because the mean of its divisors is an integer number (257197500).

Almost surely, 2^2725771666 is an apocalyptic number.

2725771666 is a deficient number, since it is larger than the sum of its proper divisors (1389388334).

2725771666 is a wasteful number, since it uses less digits than its factorization.

2725771666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14433.

The product of its digits is 1481760, while the sum is 49.

The square root of 2725771666 is about 52208.9232411472. The cubic root of 2725771666 is about 1396.8930532134.

The spelling of 2725771666 in words is "two billion, seven hundred twenty-five million, seven hundred seventy-one thousand, six hundred sixty-six".