68738208635 has 4 divisors (see below), whose sum is σ = 82485850368. Its totient is φ = 54990566904.

The previous prime is 68738208589. The next prime is 68738208677. The reversal of 68738208635 is 53680283786.

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

It is a cyclic number.

It is not a de Polignac number, because 68738208635 - 2¹⁰ = 68738207611 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6873820859 + ... + 6873820868.

It is an arithmetic number, because the mean of its divisors is an integer number (20621462592).

Almost surely, 2^68738208635 is an apocalyptic number.

68738208635 is a deficient number, since it is larger than the sum of its proper divisors (13747641733).

68738208635 is a wasteful number, since it uses less digits than its factorization.

68738208635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13747641732.

The product of its (nonzero) digits is 11612160, while the sum is 56.

The spelling of 68738208635 in words is "sixty-eight billion, seven hundred thirty-eight million, two hundred eight thousand, six hundred thirty-five".