68928496018 has 8 divisors (see below), whose sum is σ = 103393863612. Its totient is φ = 34463874816.

The previous prime is 68928496009. The next prime is 68928496019. The reversal of 68928496018 is 81069482986.

It can be written as a sum of positive squares in 2 ways, for example, as 68721049609 + 207446409 = 262147^2 + 14403^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×68928496018² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68928496019) 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, 232846 + ... + 438262.

Almost surely, 2^68928496018 is an apocalyptic number.

68928496018 is a deficient number, since it is larger than the sum of its proper divisors (34465367594).

68928496018 is a wasteful number, since it uses less digits than its factorization.

68928496018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373196.

The product of its (nonzero) digits is 11943936, while the sum is 61.

The spelling of 68928496018 in words is "sixty-eight billion, nine hundred twenty-eight million, four hundred ninety-six thousand, eighteen".