67540009728 has 72 divisors (see below), whose sum is σ = 182030464000. Its totient is φ = 22228337664.

The previous prime is 67540009697. The next prime is 67540009769. The reversal of 67540009728 is 82790004576.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 495928 + ... + 617271.

Almost surely, 2^67540009728 is an apocalyptic number.

It is an amenable number.

67540009728 is an abundant number, since it is smaller than the sum of its proper divisors (114490454272).

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

67540009728 is a wasteful number, since it uses less digits than its factorization.

67540009728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113297 (or 1113283 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 67540009728 in words is "sixty-seven billion, five hundred forty million, nine thousand, seven hundred twenty-eight".