2661643104 has 48 divisors (see below), whose sum is σ = 6990021360. Its totient is φ = 886807040.

The previous prime is 2661643091. The next prime is 2661643133. The reversal of 2661643104 is 4013461662.

2661643104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

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, 262774 + ... + 272714.

It is an arithmetic number, because the mean of its divisors is an integer number (145625445).

Almost surely, 2^2661643104 is an apocalyptic number.

2661643104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2661643104 is an abundant number, since it is smaller than the sum of its proper divisors (4328378256).

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

2661643104 is a wasteful number, since it uses less digits than its factorization.

2661643104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12743 (or 12735 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 2661643104 is about 51591.1145838118. The cubic root of 2661643104 is about 1385.8512153692.

The spelling of 2661643104 in words is "two billion, six hundred sixty-one million, six hundred forty-three thousand, one hundred four".