67961554612 has 24 divisors (see below), whose sum is σ = 137193424704. Its totient is φ = 28854170112.

The previous prime is 67961554561. The next prime is 67961554627. The reversal of 67961554612 is 21645516976.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 67961554612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11339053 + ... + 11345044.

It is an arithmetic number, because the mean of its divisors is an integer number (5716392696).

Almost surely, 2^67961554612 is an apocalyptic number.

It is an amenable number.

67961554612 is an abundant number, since it is smaller than the sum of its proper divisors (69231870092).

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

67961554612 is a wasteful number, since it uses less digits than its factorization.

67961554612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22684215 (or 22684213 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 52.

The spelling of 67961554612 in words is "sixty-seven billion, nine hundred sixty-one million, five hundred fifty-four thousand, six hundred twelve".