68648439888 has 120 divisors (see below), whose sum is σ = 224237814528. Its totient is φ = 19196510976.

The previous prime is 68648439887. The next prime is 68648439889. The reversal of 68648439888 is 88893484686.

68648439888 is a `hidden beast` number, since 6 + 86 + 4 + 84 + 398 + 88 = 666.

It is an interprime number because it is at equal distance from previous prime (68648439887) and next prime (68648439889).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68648439883) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 677131 + ... + 771882.

Almost surely, 2^68648439888 is an apocalyptic number.

It is an amenable number.

68648439888 is an abundant number, since it is smaller than the sum of its proper divisors (155589374640).

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

68648439888 is a wasteful number, since it uses less digits than its factorization.

68648439888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449081 (or 1449072 counting only the distinct ones).

The product of its digits is 509607936, while the sum is 72.

It can be divided in two parts, 68648 and 439888, that added together give a triangular number (508536 = T₁₀₀₈).

The spelling of 68648439888 in words is "sixty-eight billion, six hundred forty-eight million, four hundred thirty-nine thousand, eight hundred eighty-eight".