68451673908 has 12 divisors (see below), whose sum is σ = 159720572480. Its totient is φ = 22817224632.

The previous prime is 68451673889. The next prime is 68451673909. The reversal of 68451673908 is 80937615486.

68451673908 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68451673909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2852153068 + ... + 2852153091.

Almost surely, 2^68451673908 is an apocalyptic number.

It is an amenable number.

68451673908 is an abundant number, since it is smaller than the sum of its proper divisors (91268898572).

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

68451673908 is a wasteful number, since it uses less digits than its factorization.

68451673908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5704306166 (or 5704306164 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 68451673908 in words is "sixty-eight billion, four hundred fifty-one million, six hundred seventy-three thousand, nine hundred eight".