199719119616 has 144 divisors (see below), whose sum is σ = 541275073920. Its totient is φ = 65357332480.

The previous prime is 199719119573. The next prime is 199719119617. The reversal of 199719119616 is 616911917991.

It is a self number, because there is not a number n which added to its sum of digits gives 199719119616.

It is not an unprimeable number, because it can be changed into a prime (199719119617) 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, 39917371 + ... + 39922373.

It is an arithmetic number, because the mean of its divisors is an integer number (3758854680).

Almost surely, 2^199719119616 is an apocalyptic number.

199719119616 is a gapful number since it is divisible by the number (16) 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 199719119616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270637536960).

199719119616 is an abundant number, since it is smaller than the sum of its proper divisors (341555954304).

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

199719119616 is an equidigital number, since it uses as much as digits as its factorization.

199719119616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5962 (or 5948 counting only the distinct ones).

The product of its digits is 1653372, while the sum is 60.

The spelling of 199719119616 in words is "one hundred ninety-nine billion, seven hundred nineteen million, one hundred nineteen thousand, six hundred sixteen".