199620570428 has 48 divisors (see below), whose sum is σ = 386285760000. Its totient is φ = 89838796608.

The previous prime is 199620570427. The next prime is 199620570431. The reversal of 199620570428 is 824075026991.

199620570428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 199620570428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199620570427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122768 + ... + 643671.

It is an arithmetic number, because the mean of its divisors is an integer number (8047620000).

Almost surely, 2^199620570428 is an apocalyptic number.

It is an amenable number.

199620570428 is a deficient number, since it is larger than the sum of its proper divisors (186665189572).

199620570428 is a wasteful number, since it uses less digits than its factorization.

199620570428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766634 (or 766632 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 199620570428 in words is "one hundred ninety-nine billion, six hundred twenty million, five hundred seventy thousand, four hundred twenty-eight".