68856839793 has 48 divisors (see below), whose sum is σ = 115169733120. Its totient is φ = 38827631232.

The previous prime is 68856839791. The next prime is 68856839801. The reversal of 68856839793 is 39793865886.

It is not a de Polignac number, because 68856839793 - 2¹ = 68856839791 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68856839791) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16188055 + ... + 16192307.

It is an arithmetic number, because the mean of its divisors is an integer number (2399369440).

Almost surely, 2^68856839793 is an apocalyptic number.

68856839793 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

68856839793 is a deficient number, since it is larger than the sum of its proper divisors (46312893327).

68856839793 is a wasteful number, since it uses less digits than its factorization.

68856839793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7598 (or 7595 counting only the distinct ones).

The product of its digits is 470292480, while the sum is 72.

The spelling of 68856839793 in words is "sixty-eight billion, eight hundred fifty-six million, eight hundred thirty-nine thousand, seven hundred ninety-three".