2661344416 has 24 divisors (see below), whose sum is σ = 5305849920. Its totient is φ = 1313827008.

The previous prime is 2661344401. The next prime is 2661344419. The reversal of 2661344416 is 6144431662.

It is not an unprimeable number, because it can be changed into a prime (2661344419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523846 + ... + 528901.

It is an arithmetic number, because the mean of its divisors is an integer number (221077080).

Almost surely, 2^2661344416 is an apocalyptic number.

It is an amenable number.

2661344416 is a deficient number, since it is larger than the sum of its proper divisors (2644505504).

2661344416 is a wasteful number, since it uses less digits than its factorization.

2661344416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052836 (or 1052828 counting only the distinct ones).

The product of its digits is 82944, while the sum is 37.

The square root of 2661344416 is about 51588.2197405570. The cubic root of 2661344416 is about 1385.7993736313.

The spelling of 2661344416 in words is "two billion, six hundred sixty-one million, three hundred forty-four thousand, four hundred sixteen".