68487798643 has 8 divisors (see below), whose sum is σ = 75259321200. Its totient is φ = 61807169280.

The previous prime is 68487798539. The next prime is 68487798661. The reversal of 68487798643 is 34689778486.

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

It is a cyclic number.

It is not a de Polignac number, because 68487798643 - 2³³ = 59897864051 is a prime.

It is a super-2 number, since 2×68487798643² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68487798443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22721718 + ... + 22724731.

It is an arithmetic number, because the mean of its divisors is an integer number (9407415150).

Almost surely, 2^68487798643 is an apocalyptic number.

68487798643 is a deficient number, since it is larger than the sum of its proper divisors (6771522557).

68487798643 is a wasteful number, since it uses less digits than its factorization.

68487798643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45446597.

The product of its digits is 390168576, while the sum is 70.

The spelling of 68487798643 in words is "sixty-eight billion, four hundred eighty-seven million, seven hundred ninety-eight thousand, six hundred forty-three".