68479394823 has 24 divisors (see below), whose sum is σ = 113052212000. Its totient is φ = 39128707584.

The previous prime is 68479394771. The next prime is 68479394873. The reversal of 68479394823 is 32849397486.

68479394823 is a `hidden beast` number, since 6 + 84 + 79 + 3 + 9 + 482 + 3 = 666.

68479394823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 68479394823 - 2⁸ = 68479394567 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68479394873) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1989423 + ... + 2023551.

Almost surely, 2^68479394823 is an apocalyptic number.

68479394823 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

68479394823 is a deficient number, since it is larger than the sum of its proper divisors (44572817177).

68479394823 is a wasteful number, since it uses less digits than its factorization.

68479394823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65991 (or 65988 counting only the distinct ones).

The product of its digits is 62705664, while the sum is 63.

The spelling of 68479394823 in words is "sixty-eight billion, four hundred seventy-nine million, three hundred ninety-four thousand, eight hundred twenty-three".