68814521558 has 8 divisors (see below), whose sum is σ = 106011560352. Its totient is φ = 33477334776.

The previous prime is 68814521551. The next prime is 68814521569. The reversal of 68814521558 is 85512541886.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68814521551) 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, 464962910 + ... + 464963057.

It is an arithmetic number, because the mean of its divisors is an integer number (13251445044).

Almost surely, 2^68814521558 is an apocalyptic number.

68814521558 is a deficient number, since it is larger than the sum of its proper divisors (37197038794).

68814521558 is a wasteful number, since it uses less digits than its factorization.

68814521558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929926006.

The product of its digits is 3072000, while the sum is 53.

The spelling of 68814521558 in words is "sixty-eight billion, eight hundred fourteen million, five hundred twenty-one thousand, five hundred fifty-eight".