199528671351870 has 160 divisors (see below), whose sum is σ = 615417342667776. Its totient is φ = 45438263236800.

The previous prime is 199528671351859. The next prime is 199528671351871. The reversal of 199528671351870 is 78153176825991.

It is a happy number.

199528671351870 is a `hidden beast` number, since 1 + 9 + 9 + 5 + 28 + 6 + 7 + 13 + 518 + 70 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199528671351871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 63390076 + ... + 66463215.

Almost surely, 2^{199528671351870} is an apocalyptic number.

199528671351870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199528671351870 is an abundant number, since it is smaller than the sum of its proper divisors (415888671315906).

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

199528671351870 is a wasteful number, since it uses less digits than its factorization.

199528671351870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129853588 (or 129853579 counting only the distinct ones).

The product of its (nonzero) digits is 228614400, while the sum is 72.

The spelling of 199528671351870 in words is "one hundred ninety-nine trillion, five hundred twenty-eight billion, six hundred seventy-one million, three hundred fifty-one thousand, eight hundred seventy".