199581290076 has 96 divisors (see below), whose sum is σ = 539163197440. Its totient is φ = 56279530944.

The previous prime is 199581290071. The next prime is 199581290089. The reversal of 199581290076 is 670092185991.

It is a junction number, because it is equal to n+sod(n) for n = 199581289998 and 199581290025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199581290071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25365495 + ... + 25373361.

Almost surely, 2^199581290076 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199581290076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269581598720).

199581290076 is an abundant number, since it is smaller than the sum of its proper divisors (339581907364).

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

199581290076 is a wasteful number, since it uses less digits than its factorization.

199581290076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11783 (or 11781 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 57.

The spelling of 199581290076 in words is "one hundred ninety-nine billion, five hundred eighty-one million, two hundred ninety thousand, seventy-six".