67749338544 has 20 divisors (see below), whose sum is σ = 175019124696. Its totient is φ = 22583112832.

The previous prime is 67749338543. The next prime is 67749338549. The reversal of 67749338544 is 44583394776.

It is not an unprimeable number, because it can be changed into a prime (67749338543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 705722229 + ... + 705722324.

Almost surely, 2^67749338544 is an apocalyptic number.

It is an amenable number.

67749338544 is an abundant number, since it is smaller than the sum of its proper divisors (107269786152).

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

67749338544 is a wasteful number, since it uses less digits than its factorization.

67749338544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411444564 (or 1411444558 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 60.

The spelling of 67749338544 in words is "sixty-seven billion, seven hundred forty-nine million, three hundred thirty-eight thousand, five hundred forty-four".