68194929473 has 4 divisors (see below), whose sum is σ = 74394468528. Its totient is φ = 61995390420.

The previous prime is 68194929461. The next prime is 68194929493. The reversal of 68194929473 is 37492949186.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68194929473 - 2⁸ = 68194929217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68194929493) by changing a digit.

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, 3099769511 + ... + 3099769532.

It is an arithmetic number, because the mean of its divisors is an integer number (18598617132).

Almost surely, 2^68194929473 is an apocalyptic number.

It is an amenable number.

68194929473 is a deficient number, since it is larger than the sum of its proper divisors (6199539055).

68194929473 is a wasteful number, since it uses less digits than its factorization.

68194929473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6199539054.

The product of its digits is 23514624, while the sum is 62.

The spelling of 68194929473 in words is "sixty-eight billion, one hundred ninety-four million, nine hundred twenty-nine thousand, four hundred seventy-three".