67855656959999 has 4 divisors (see below), whose sum is σ = 67855675818336. Its totient is φ = 67855638101664.

The previous prime is 67855656959983. The next prime is 67855656960017. The reversal of 67855656959999 is 99995965655876.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 67855656959999 - 2⁴ = 67855656959983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67855656959099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2168039 + ... + 11849544.

It is an arithmetic number, because the mean of its divisors is an integer number (16963918954584).

Almost surely, 2^{67855656959999} is an apocalyptic number.

67855656959999 is a deficient number, since it is larger than the sum of its proper divisors (18858337).

67855656959999 is a wasteful number, since it uses less digits than its factorization.

67855656959999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18858336.

The product of its digits is 446410440000, while the sum is 98.

The spelling of 67855656959999 in words is "sixty-seven trillion, eight hundred fifty-five billion, six hundred fifty-six million, nine hundred fifty-nine thousand, nine hundred ninety-nine".