68031467858 has 4 divisors (see below), whose sum is σ = 102047201790. Its totient is φ = 34015733928.

The previous prime is 68031467843. The next prime is 68031467869. The reversal of 68031467858 is 85876413086.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 37625524729 + 30405943129 = 193973^2 + 174373^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 17007866963 + ... + 17007866966.

Almost surely, 2^68031467858 is an apocalyptic number.

68031467858 is a deficient number, since it is larger than the sum of its proper divisors (34015733932).

68031467858 is a wasteful number, since it uses less digits than its factorization.

68031467858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34015733931.

The product of its (nonzero) digits is 7741440, while the sum is 56.

The spelling of 68031467858 in words is "sixty-eight billion, thirty-one million, four hundred sixty-seven thousand, eight hundred fifty-eight".