19885500105136 has 20 divisors (see below), whose sum is σ = 38528352124864. Its totient is φ = 9942699556800.

The previous prime is 19885500105127. The next prime is 19885500105179. The reversal of 19885500105136 is 63150100558891.

It is a super-2 number, since 2×19885500105136² (a number of 27 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 201121 + ... + 6309631.

Almost surely, 2^{19885500105136} is an apocalyptic number.

19885500105136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19885500105136 is a deficient number, since it is larger than the sum of its proper divisors (18642852019728).

19885500105136 is a wasteful number, since it uses less digits than its factorization.

19885500105136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6311980 (or 6311974 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 52.

The spelling of 19885500105136 in words is "nineteen trillion, eight hundred eighty-five billion, five hundred million, one hundred five thousand, one hundred thirty-six".