2661152666 has 16 divisors (see below), whose sum is σ = 4040816640. Its totient is φ = 1314306000.

The previous prime is 2661152657. The next prime is 2661152677. The reversal of 2661152666 is 6662511662.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35291 + ... + 81041.

It is an arithmetic number, because the mean of its divisors is an integer number (252551040).

Almost surely, 2^2661152666 is an apocalyptic number.

2661152666 is a deficient number, since it is larger than the sum of its proper divisors (1379663974).

2661152666 is a wasteful number, since it uses less digits than its factorization.

2661152666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46109.

The product of its digits is 155520, while the sum is 41.

The square root of 2661152666 is about 51586.3612401573. The cubic root of 2661152666 is about 1385.7660905269.

The spelling of 2661152666 in words is "two billion, six hundred sixty-one million, one hundred fifty-two thousand, six hundred sixty-six".