67718611984 has 45 divisors (see below), whose sum is σ = 133329631071. Its totient is φ = 33319593120.

The previous prime is 67718611739. The next prime is 67718611991. The reversal of 67718611984 is 48911681776.

The square root of 67718611984 is 260228.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 69740619 + ... + 69741589.

Almost surely, 2^67718611984 is an apocalyptic number.

67718611984 is the 260228-th square number.

It is an amenable number.

67718611984 is a deficient number, since it is larger than the sum of its proper divisors (65611019087).

67718611984 is an frugal number, since it uses more digits than its factorization.

67718611984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2084 (or 1040 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 58.

The spelling of 67718611984 in words is "sixty-seven billion, seven hundred eighteen million, six hundred eleven thousand, nine hundred eighty-four".