199889000880 has 80 divisors (see below), whose sum is σ = 619876739040. Its totient is φ = 53284737024.

The previous prime is 199889000807. The next prime is 199889000881. The reversal of 199889000880 is 88000988991.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×199889000880² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (199889000881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 532926 + ... + 826914.

It is an arithmetic number, because the mean of its divisors is an integer number (7748459238).

Almost surely, 2^199889000880 is an apocalyptic number.

199889000880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199889000880 is an abundant number, since it is smaller than the sum of its proper divisors (419987738160).

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

199889000880 is a wasteful number, since it uses less digits than its factorization.

199889000880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296838 (or 296832 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 60.

The spelling of 199889000880 in words is "one hundred ninety-nine billion, eight hundred eighty-nine million, eight hundred eighty", and thus it is an aban number.