2665988412 has 12 divisors (see below), whose sum is σ = 6220639656. Its totient is φ = 888662800.

The previous prime is 2665988383. The next prime is 2665988419. The reversal of 2665988412 is 2148895662.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665988419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111082839 + ... + 111082862.

It is an arithmetic number, because the mean of its divisors is an integer number (518386638).

Almost surely, 2^2665988412 is an apocalyptic number.

It is an amenable number.

2665988412 is an abundant number, since it is smaller than the sum of its proper divisors (3554651244).

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

2665988412 is a wasteful number, since it uses less digits than its factorization.

2665988412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222165708 (or 222165706 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 51.

The square root of 2665988412 is about 51633.2103592252. The cubic root of 2665988412 is about 1386.6049698522.

The spelling of 2665988412 in words is "two billion, six hundred sixty-five million, nine hundred eighty-eight thousand, four hundred twelve".