67709709456 has 80 divisors (see below), whose sum is σ = 182734970880. Its totient is φ = 21578647680.

The previous prime is 67709709449. The next prime is 67709709481. The reversal of 67709709456 is 65490790776.

It is a self number, because there is not a number n which added to its sum of digits gives 67709709456.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150616 + ... + 397623.

It is an arithmetic number, because the mean of its divisors is an integer number (2284187136).

Almost surely, 2^67709709456 is an apocalyptic number.

It is an amenable number.

67709709456 is an abundant number, since it is smaller than the sum of its proper divisors (115025261424).

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

67709709456 is a wasteful number, since it uses less digits than its factorization.

67709709456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548364 (or 548358 counting only the distinct ones).

The product of its (nonzero) digits is 20003760, while the sum is 60.

The spelling of 67709709456 in words is "sixty-seven billion, seven hundred nine million, seven hundred nine thousand, four hundred fifty-six".