2099660140 has 144 divisors (see below), whose sum is σ = 4901783040. Its totient is φ = 754723840.

The previous prime is 2099660131. The next prime is 2099660149. The reversal of 2099660140 is 410669902.

It is an interprime number because it is at equal distance from previous prime (2099660131) and next prime (2099660149).

It is a self number, because there is not a number n which added to its sum of digits gives 2099660140.

It is not an unprimeable number, because it can be changed into a prime (2099660149) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16027875 + ... + 16028005.

It is an arithmetic number, because the mean of its divisors is an integer number (34040160).

Almost surely, 2^2099660140 is an apocalyptic number.

2099660140 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 2099660140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2450891520).

2099660140 is an abundant number, since it is smaller than the sum of its proper divisors (2802122900).

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

2099660140 is a wasteful number, since it uses less digits than its factorization.

2099660140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 2099660140 is about 45822.0486229064. The cubic root of 2099660140 is about 1280.5100790962.

The spelling of 2099660140 in words is "two billion, ninety-nine million, six hundred sixty thousand, one hundred forty".