68197316938 has 4 divisors (see below), whose sum is σ = 102295975410. Its totient is φ = 34098658468.

The previous prime is 68197316879. The next prime is 68197316959. The reversal of 68197316938 is 83961379186.

68197316938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 45331945569 + 22865371369 = 212913^2 + 151213^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17049329233 + ... + 17049329236.

Almost surely, 2^68197316938 is an apocalyptic number.

68197316938 is a deficient number, since it is larger than the sum of its proper divisors (34098658472).

68197316938 is a wasteful number, since it uses less digits than its factorization.

68197316938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34098658471.

The product of its digits is 11757312, while the sum is 61.

The spelling of 68197316938 in words is "sixty-eight billion, one hundred ninety-seven million, three hundred sixteen thousand, nine hundred thirty-eight".