199976034468 has 96 divisors (see below), whose sum is σ = 545919897600. Its totient is φ = 55786427136.

The previous prime is 199976034463. The next prime is 199976034481. The reversal of 199976034468 is 864430679991.

It is a junction number, because it is equal to n+sod(n) for n = 199976034399 and 199976034408.

It is not an unprimeable number, because it can be changed into a prime (199976034463) 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, 1593768 + ... + 1714656.

It is an arithmetic number, because the mean of its divisors is an integer number (5686665600).

Almost surely, 2^199976034468 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 199976034468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272959948800).

199976034468 is an abundant number, since it is smaller than the sum of its proper divisors (345943863132).

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

199976034468 is a wasteful number, since it uses less digits than its factorization.

199976034468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121369 (or 121367 counting only the distinct ones).

The product of its (nonzero) digits is 70543872, while the sum is 66.

The spelling of 199976034468 in words is "one hundred ninety-nine billion, nine hundred seventy-six million, thirty-four thousand, four hundred sixty-eight".