2666365556 has 12 divisors (see below), whose sum is σ = 4672563168. Its totient is φ = 1331347512.

The previous prime is 2666365547. The next prime is 2666365591. The reversal of 2666365556 is 6555636662.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455546 + ... + 461361.

It is an arithmetic number, because the mean of its divisors is an integer number (389380264).

Almost surely, 2^2666365556 is an apocalyptic number.

It is an amenable number.

2666365556 is a deficient number, since it is larger than the sum of its proper divisors (2006197612).

2666365556 is a wasteful number, since it uses less digits than its factorization.

2666365556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917638 (or 917636 counting only the distinct ones).

The product of its digits is 5832000, while the sum is 50.

The square root of 2666365556 is about 51636.8623756324. The cubic root of 2666365556 is about 1386.6703521177.

The spelling of 2666365556 in words is "two billion, six hundred sixty-six million, three hundred sixty-five thousand, five hundred fifty-six".