67839188656 has 10 divisors (see below), whose sum is σ = 131438428052. Its totient is φ = 33919594320.

The previous prime is 67839188633. The next prime is 67839188657. The reversal of 67839188656 is 65688193876.

It is a junction number, because it is equal to n+sod(n) for n = 67839188591 and 67839188600.

It is not an unprimeable number, because it can be changed into a prime (67839188657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2119974630 + ... + 2119974661.

Almost surely, 2^67839188656 is an apocalyptic number.

It is an amenable number.

67839188656 is a deficient number, since it is larger than the sum of its proper divisors (63599239396).

67839188656 is a wasteful number, since it uses less digits than its factorization.

67839188656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4239949299 (or 4239949293 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 67.

The spelling of 67839188656 in words is "sixty-seven billion, eight hundred thirty-nine million, one hundred eighty-eight thousand, six hundred fifty-six".