67533340520 has 32 divisors (see below), whose sum is σ = 157189674600. Its totient is φ = 26081841408.

The previous prime is 67533340519. The next prime is 67533340543. The reversal of 67533340520 is 2504333576.

It can be written as a sum of positive squares in 4 ways, for example, as 63805749604 + 3727590916 = 252598^2 + 61054^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 29108039 + ... + 29110358.

Almost surely, 2^67533340520 is an apocalyptic number.

It is an amenable number.

67533340520 is an abundant number, since it is smaller than the sum of its proper divisors (89656334080).

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

67533340520 is a wasteful number, since it uses less digits than its factorization.

67533340520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58218437 (or 58218433 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 38.

The spelling of 67533340520 in words is "sixty-seven billion, five hundred thirty-three million, three hundred forty thousand, five hundred twenty".