19968536513595 has 16 divisors (see below), whose sum is σ = 31950914964480. Its totient is φ = 10649467293024.

The previous prime is 19968536513593. The next prime is 19968536513599. The reversal of 19968536513595 is 59531563586991.

It is not a de Polignac number, because 19968536513595 - 2¹ = 19968536513593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19968536513593) 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, 25783669 + ... + 26546838.

It is an arithmetic number, because the mean of its divisors is an integer number (1996932185280).

Almost surely, 2^{19968536513595} is an apocalyptic number.

19968536513595 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19968536513595 is a deficient number, since it is larger than the sum of its proper divisors (11982378450885).

19968536513595 is a wasteful number, since it uses less digits than its factorization.

19968536513595 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52355954.

The product of its digits is 1180980000, while the sum is 75.

The spelling of 19968536513595 in words is "nineteen trillion, nine hundred sixty-eight billion, five hundred thirty-six million, five hundred thirteen thousand, five hundred ninety-five".