2199447691880 has 16 divisors (see below), whose sum is σ = 4948757306820. Its totient is φ = 879779076736.

The previous prime is 2199447691841. The next prime is 2199447691913. The reversal of 2199447691880 is 881967449912.

It can be written as a sum of positive squares in 2 ways, for example, as 1981771324516 + 217676367364 = 1407754^2 + 466558^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2199447691880.

It is an unprimeable number.

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, 27493096109 + ... + 27493096188.

Almost surely, 2^{2199447691880} is an apocalyptic number.

2199447691880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2199447691880 is an abundant number, since it is smaller than the sum of its proper divisors (2749309614940).

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

2199447691880 is a wasteful number, since it uses less digits than its factorization.

2199447691880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54986192308 (or 54986192304 counting only the distinct ones).

The product of its (nonzero) digits is 62705664, while the sum is 68.

The spelling of 2199447691880 in words is "two trillion, one hundred ninety-nine billion, four hundred forty-seven million, six hundred ninety-one thousand, eight hundred eighty".