67197532385 has 32 divisors (see below), whose sum is σ = 83846031360. Its totient is φ = 51645081600.

The previous prime is 67197532327. The next prime is 67197532397. The reversal of 67197532385 is 58323579176.

It is a de Polignac number, because none of the positive numbers 2^k-67197532385 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67197532385.

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 31 ways as a sum of consecutive naturals, for example, 18879236 + ... + 18882794.

It is an arithmetic number, because the mean of its divisors is an integer number (2620188480).

Almost surely, 2^67197532385 is an apocalyptic number.

It is an amenable number.

67197532385 is a deficient number, since it is larger than the sum of its proper divisors (16648498975).

67197532385 is a wasteful number, since it uses less digits than its factorization.

67197532385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4449.

The product of its digits is 9525600, while the sum is 56.

The spelling of 67197532385 in words is "sixty-seven billion, one hundred ninety-seven million, five hundred thirty-two thousand, three hundred eighty-five".