2666262222464 has 64 divisors (see below), whose sum is σ = 5592750576000. Its totient is φ = 1262628974592.

The previous prime is 2666262222443. The next prime is 2666262222467. The reversal of 2666262222464 is 4642222626662.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (2666262222467) by changing a digit.

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, 9080057 + ... + 9369095.

It is an arithmetic number, because the mean of its divisors is an integer number (87386727750).

Almost surely, 2^{2666262222464} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2666262222464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2796375288000).

2666262222464 is an abundant number, since it is smaller than the sum of its proper divisors (2926488353536).

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

2666262222464 is a wasteful number, since it uses less digits than its factorization.

2666262222464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292865 (or 292853 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 50.

The spelling of 2666262222464 in words is "two trillion, six hundred sixty-six billion, two hundred sixty-two million, two hundred twenty-two thousand, four hundred sixty-four".