2666216562 has 16 divisors (see below), whose sum is σ = 5332940832. Its totient is φ = 888654240.

The previous prime is 2666216461. The next prime is 2666216617. The reversal of 2666216562 is 2656126662.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104862 + ... + 127782.

It is an arithmetic number, because the mean of its divisors is an integer number (333308802).

Almost surely, 2^2666216562 is an apocalyptic number.

2666216562 is an abundant number, since it is smaller than the sum of its proper divisors (2666724270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2666216562 is a wasteful number, since it uses less digits than its factorization.

2666216562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42313.

The product of its digits is 311040, while the sum is 42.

The square root of 2666216562 is about 51635.4196458206. The cubic root of 2666216562 is about 1386.6445230248.

The spelling of 2666216562 in words is "two billion, six hundred sixty-six million, two hundred sixteen thousand, five hundred sixty-two".