68241664560 has 40 divisors (see below), whose sum is σ = 211549160880. Its totient is φ = 18197777152.

The previous prime is 68241664549. The next prime is 68241664567. The reversal of 68241664560 is 6546614286.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (68241664567) 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 7 ways as a sum of consecutive naturals, for example, 142169895 + ... + 142170374.

It is an arithmetic number, because the mean of its divisors is an integer number (5288729022).

Almost surely, 2^68241664560 is an apocalyptic number.

68241664560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68241664560 is an abundant number, since it is smaller than the sum of its proper divisors (143307496320).

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

68241664560 is a wasteful number, since it uses less digits than its factorization.

68241664560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284340285 (or 284340279 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 68241664560 in words is "sixty-eight billion, two hundred forty-one million, six hundred sixty-four thousand, five hundred sixty".