67975065216 has 160 divisors (see below), whose sum is σ = 214192818180. Its totient is φ = 21325455360.

The previous prime is 67975065211. The next prime is 67975065241. The reversal of 67975065216 is 61256057976.

67975065216 is a `hidden beast` number, since 6 + 79 + 7 + 506 + 52 + 16 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 54587649600 + 13387415616 = 233640^2 + 115704^2 .

It is a super-2 number, since 2×67975065216² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (67975065211) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 16575 + ... + 369086.

Almost surely, 2^67975065216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67975065216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107096409090).

67975065216 is an abundant number, since it is smaller than the sum of its proper divisors (146217752964).

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

67975065216 is a wasteful number, since it uses less digits than its factorization.

67975065216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385704 (or 385683 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 54.

The spelling of 67975065216 in words is "sixty-seven billion, nine hundred seventy-five million, sixty-five thousand, two hundred sixteen".