67780061288 has 16 divisors (see below), whose sum is σ = 128057751360. Its totient is φ = 33631327600.

The previous prime is 67780061273. The next prime is 67780061291. The reversal of 67780061288 is 88216008776.

It is a happy 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, 32336768 + ... + 32338863.

It is an arithmetic number, because the mean of its divisors is an integer number (8003609460).

Almost surely, 2^67780061288 is an apocalyptic number.

It is an amenable number.

67780061288 is a deficient number, since it is larger than the sum of its proper divisors (60277690072).

67780061288 is a wasteful number, since it uses less digits than its factorization.

67780061288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64675768 (or 64675764 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 53.

The spelling of 67780061288 in words is "sixty-seven billion, seven hundred eighty million, sixty-one thousand, two hundred eighty-eight".