199389447132720 has 640 divisors, whose sum is σ = 696987727430400. Its totient is φ = 46823090356224.

The previous prime is 199389447132677. The next prime is 199389447132767. The reversal of 199389447132720 is 27231744983991.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 10456199346 + ... + 10456218414.

It is an arithmetic number, because the mean of its divisors is an integer number (1089043324110).

Almost surely, 2^{199389447132720} is an apocalyptic number.

199389447132720 is a gapful number since it is divisible by the number (10) 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 199389447132720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348493863715200).

199389447132720 is an abundant number, since it is smaller than the sum of its proper divisors (497598280297680).

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

199389447132720 is a wasteful number, since it uses less digits than its factorization.

199389447132720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20897 (or 20891 counting only the distinct ones).

The product of its (nonzero) digits is 164602368, while the sum is 69.

The spelling of 199389447132720 in words is "one hundred ninety-nine trillion, three hundred eighty-nine billion, four hundred forty-seven million, one hundred thirty-two thousand, seven hundred twenty".