2102661344 has 60 divisors (see below), whose sum is σ = 4829439384. Its totient is φ = 901107648.

The previous prime is 2102661331. The next prime is 2102661347. The reversal of 2102661344 is 4431662012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102661347) 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 9 ways as a sum of consecutive naturals, for example, 63149 + ... + 90515.

Almost surely, 2^2102661344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2102661344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2414719692).

2102661344 is an abundant number, since it is smaller than the sum of its proper divisors (2726778040).

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

2102661344 is an frugal number, since it uses more digits than its factorization.

2102661344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27405 (or 27376 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 2102661344 is about 45854.7853991271. The cubic root of 2102661344 is about 1281.1198987976.

The spelling of 2102661344 in words is "two billion, one hundred two million, six hundred sixty-one thousand, three hundred forty-four".