199789800628804 has 27 divisors (see below), whose sum is σ = 357954401830557. Its totient is φ = 97571169440304.

The previous prime is 199789800628793. The next prime is 199789800628813. The reversal of 199789800628804 is 408826008987991.

The square root of 199789800628804 is 14134702.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 17179118352900 + 182610682275904 = 4144770^2 + 13513352^2 .

It is a super-4 number, since 4×199789800628804⁴ (a number of 58 digits) contains 4444 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 1215502194 + ... + 1215666550.

Almost surely, 2^{199789800628804} is an apocalyptic number.

199789800628804 is the 14134702-nd square number.

It is an amenable number.

199789800628804 is a deficient number, since it is larger than the sum of its proper divisors (158164601201753).

199789800628804 is an frugal number, since it uses more digits than its factorization.

199789800628804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328804 (or 164402 counting only the distinct ones).

The product of its (nonzero) digits is 1003290624, while the sum is 79.

The spelling of 199789800628804 in words is "one hundred ninety-nine trillion, seven hundred eighty-nine billion, eight hundred million, six hundred twenty-eight thousand, eight hundred four".