68213815858 has 8 divisors (see below), whose sum is σ = 102321836928. Its totient is φ = 34106536884.

The previous prime is 68213815853. The next prime is 68213815867. The reversal of 68213815858 is 85851831286.

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

It is a junction number, because it is equal to n+sod(n) for n = 68213815799 and 68213815808.

It is not an unprimeable number, because it can be changed into a prime (68213815853) 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, 234135 + ... + 437317.

It is an arithmetic number, because the mean of its divisors is an integer number (12790229616).

Almost surely, 2^68213815858 is an apocalyptic number.

68213815858 is a deficient number, since it is larger than the sum of its proper divisors (34108021070).

68213815858 is a wasteful number, since it uses less digits than its factorization.

68213815858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371048.

The product of its digits is 3686400, while the sum is 55.

The spelling of 68213815858 in words is "sixty-eight billion, two hundred thirteen million, eight hundred fifteen thousand, eight hundred fifty-eight".