2664212909 has 16 divisors (see below), whose sum is σ = 2736115200. Its totient is φ = 2593347504.

The previous prime is 2664212899. The next prime is 2664212951. The reversal of 2664212909 is 9092124662.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2664212909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2664212009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3664304 + ... + 3665030.

It is an arithmetic number, because the mean of its divisors is an integer number (171007200).

Almost surely, 2^2664212909 is an apocalyptic number.

It is an amenable number.

2664212909 is a deficient number, since it is larger than the sum of its proper divisors (71902291).

2664212909 is a wasteful number, since it uses less digits than its factorization.

2664212909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 2664212909 is about 51616.0140750911. The cubic root of 2664212909 is about 1386.2970830402.

The spelling of 2664212909 in words is "two billion, six hundred sixty-four million, two hundred twelve thousand, nine hundred nine".