199287778560 has 144 divisors (see below), whose sum is σ = 685435156224. Its totient is φ = 49055440896.

The previous prime is 199287778519. The next prime is 199287778577. The reversal of 199287778560 is 65877782991.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1946152 + ... + 2045991.

Almost surely, 2^199287778560 is an apocalyptic number.

199287778560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199287778560 is an abundant number, since it is smaller than the sum of its proper divisors (486147377664).

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

199287778560 is a wasteful number, since it uses less digits than its factorization.

199287778560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3992180 (or 3992166 counting only the distinct ones).

The product of its (nonzero) digits is 106686720, while the sum is 69.

The spelling of 199287778560 in words is "one hundred ninety-nine billion, two hundred eighty-seven million, seven hundred seventy-eight thousand, five hundred sixty".