67277778336 has 60 divisors (see below), whose sum is σ = 197862084882. Its totient is φ = 22425925248.

The previous prime is 67277778301. The next prime is 67277778383. The reversal of 67277778336 is 63387777276.

It can be written as a sum of positive squares in only one way, i.e., 47108097936 + 20169680400 = 217044^2 + 142020^2 .

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12975375 + ... + 12980558.

Almost surely, 2^67277778336 is an apocalyptic number.

It is an amenable number.

67277778336 is an abundant number, since it is smaller than the sum of its proper divisors (130584306546).

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

67277778336 is a wasteful number, since it uses less digits than its factorization.

67277778336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25955955 (or 25955938 counting only the distinct ones).

The product of its digits is 87127488, while the sum is 63.

The spelling of 67277778336 in words is "sixty-seven billion, two hundred seventy-seven million, seven hundred seventy-eight thousand, three hundred thirty-six".