2099623680 has 720 divisors, whose sum is σ = 9402269184. Its totient is φ = 434626560.

The previous prime is 2099623679. The next prime is 2099623703. The reversal of 2099623680 is 863269902.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 7983229 + ... + 7983491.

Almost surely, 2^2099623680 is an apocalyptic number.

2099623680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2099623680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4701134592).

2099623680 is an abundant number, since it is smaller than the sum of its proper divisors (7302645504).

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

2099623680 is a wasteful number, since it uses less digits than its factorization.

2099623680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 2099623680 is about 45821.6507777710. The cubic root of 2099623680 is about 1280.5026671557.

The spelling of 2099623680 in words is "two billion, ninety-nine million, six hundred twenty-three thousand, six hundred eighty".