68136801038 has 4 divisors (see below), whose sum is σ = 102205201560. Its totient is φ = 34068400518.

The previous prime is 68136801017. The next prime is 68136801041. The reversal of 68136801038 is 83010863186.

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

It is a self number, because there is not a number n which added to its sum of digits gives 68136801038.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17034200258 + ... + 17034200261.

It is an arithmetic number, because the mean of its divisors is an integer number (25551300390).

Almost surely, 2^68136801038 is an apocalyptic number.

68136801038 is a deficient number, since it is larger than the sum of its proper divisors (34068400522).

68136801038 is a wasteful number, since it uses less digits than its factorization.

68136801038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34068400521.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 68136801038 in words is "sixty-eight billion, one hundred thirty-six million, eight hundred one thousand, thirty-eight".