67340073400728 has 64 divisors (see below), whose sum is σ = 177701608329600. Its totient is φ = 21265286285088.

The previous prime is 67340073400543. The next prime is 67340073400729. The reversal of 67340073400728 is 82700437004376.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67340073400729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204372226 + ... + 204701457.

It is an arithmetic number, because the mean of its divisors is an integer number (2776587630150).

Almost surely, 2^{67340073400728} is an apocalyptic number.

It is an amenable number.

67340073400728 is an abundant number, since it is smaller than the sum of its proper divisors (110361534928872).

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

67340073400728 is a wasteful number, since it uses less digits than its factorization.

67340073400728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409073749 (or 409073707 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 51.

The spelling of 67340073400728 in words is "sixty-seven trillion, three hundred forty billion, seventy-three million, four hundred thousand, seven hundred twenty-eight".