68739474807838 has 8 divisors (see below), whose sum is σ = 103120241142600. Its totient is φ = 34366061093640.

The previous prime is 68739474807833. The next prime is 68739474807841. The reversal of 68739474807838 is 83870847493786.

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 (68739474807833) 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, 1838131768 + ... + 1838169163.

It is an arithmetic number, because the mean of its divisors is an integer number (12890030142825).

Almost surely, 2^{68739474807838} is an apocalyptic number.

68739474807838 is a deficient number, since it is larger than the sum of its proper divisors (34380766334762).

68739474807838 is a wasteful number, since it uses less digits than its factorization.

68739474807838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3676310282.

The product of its (nonzero) digits is 10924720128, while the sum is 82.

The spelling of 68739474807838 in words is "sixty-eight trillion, seven hundred thirty-nine billion, four hundred seventy-four million, eight hundred seven thousand, eight hundred thirty-eight".