2664721011 has 16 divisors (see below), whose sum is σ = 3623045888. Its totient is φ = 1741629600.

The previous prime is 2664720991. The next prime is 2664721027. The reversal of 2664721011 is 1101274662.

It is not a de Polignac number, because 2664721011 - 2²³ = 2656332403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2664721011.

It is not an unprimeable number, because it can be changed into a prime (2664721061) 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, 32466 + ... + 79896.

It is an arithmetic number, because the mean of its divisors is an integer number (226440368).

Almost surely, 2^2664721011 is an apocalyptic number.

2664721011 is a deficient number, since it is larger than the sum of its proper divisors (958324877).

2664721011 is a wasteful number, since it uses less digits than its factorization.

2664721011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47802.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 2664721011 is about 51620.9357819093. The cubic root of 2664721011 is about 1386.3852060708.

Adding to 2664721011 its reverse (1101274662), we get a palindrome (3765995673).

The spelling of 2664721011 in words is "two billion, six hundred sixty-four million, seven hundred twenty-one thousand, eleven".