68335552478 has 8 divisors (see below), whose sum is σ = 102588680640. Its totient is φ = 34139325600.

The previous prime is 68335552433. The next prime is 68335552501. The reversal of 68335552478 is 87425553386.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14222318 + ... + 14227121.

It is an arithmetic number, because the mean of its divisors is an integer number (12823585080).

Almost surely, 2^68335552478 is an apocalyptic number.

68335552478 is a deficient number, since it is larger than the sum of its proper divisors (34253128162).

68335552478 is a wasteful number, since it uses less digits than its factorization.

68335552478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28450642.

The product of its digits is 24192000, while the sum is 56.

The spelling of 68335552478 in words is "sixty-eight billion, three hundred thirty-five million, five hundred fifty-two thousand, four hundred seventy-eight".