2666421012 has 24 divisors (see below), whose sum is σ = 6549104800. Its totient is φ = 842027616.

The previous prime is 2666420989. The next prime is 2666421047. The reversal of 2666421012 is 2101246662.

It is a congruent number.

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, 5847187 + ... + 5847642.

Almost surely, 2^2666421012 is an apocalyptic number.

It is an amenable number.

2666421012 is an abundant number, since it is smaller than the sum of its proper divisors (3882683788).

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

2666421012 is a wasteful number, since it uses less digits than its factorization.

2666421012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11694855 (or 11694853 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 2666421012 is about 51637.3993535693. The cubic root of 2666421012 is about 1386.6799655355.

Adding to 2666421012 its reverse (2101246662), we get a palindrome (4767667674).

The spelling of 2666421012 in words is "two billion, six hundred sixty-six million, four hundred twenty-one thousand, twelve".