67778345480 has 16 divisors (see below), whose sum is σ = 152501277420. Its totient is φ = 27111338176.

The previous prime is 67778345443. The next prime is 67778345497. The reversal of 67778345480 is 8454387776.

It can be written as a sum of positive squares in 2 ways, for example, as 66204319204 + 1574026276 = 257302^2 + 39674^2 .

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, 847229279 + ... + 847229358.

Almost surely, 2^67778345480 is an apocalyptic number.

It is an amenable number.

67778345480 is an abundant number, since it is smaller than the sum of its proper divisors (84722931940).

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

67778345480 is a wasteful number, since it uses less digits than its factorization.

67778345480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694458648 (or 1694458644 counting only the distinct ones).

The product of its (nonzero) digits is 31610880, while the sum is 59.

The spelling of 67778345480 in words is "sixty-seven billion, seven hundred seventy-eight million, three hundred forty-five thousand, four hundred eighty".