67205661056 has 32 divisors (see below), whose sum is σ = 135884597880. Its totient is φ = 33101291520.

The previous prime is 67205661041. The next prime is 67205661067. The reversal of 67205661056 is 65016650276.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 67205660998 and 67205661016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3909665 + ... + 3926816.

Almost surely, 2^67205661056 is an apocalyptic number.

It is an amenable number.

67205661056 is an abundant number, since it is smaller than the sum of its proper divisors (68678936824).

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

67205661056 is an equidigital number, since it uses as much as digits as its factorization.

67205661056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7836562 (or 7836550 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 67205661056 in words is "sixty-seven billion, two hundred five million, six hundred sixty-one thousand, fifty-six".