67779558328 has 8 divisors (see below), whose sum is σ = 127086671880. Its totient is φ = 33889779160.

The previous prime is 67779558317. The next prime is 67779558359. The reversal of 67779558328 is 82385597776.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4236222388 + ... + 4236222403.

It is an arithmetic number, because the mean of its divisors is an integer number (15885833985).

Almost surely, 2^67779558328 is an apocalyptic number.

It is an amenable number.

67779558328 is a deficient number, since it is larger than the sum of its proper divisors (59307113552).

67779558328 is a wasteful number, since it uses less digits than its factorization.

67779558328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8472444797 (or 8472444793 counting only the distinct ones).

The product of its digits is 177811200, while the sum is 67.

The spelling of 67779558328 in words is "sixty-seven billion, seven hundred seventy-nine million, five hundred fifty-eight thousand, three hundred twenty-eight".