68147414047469 has 4 divisors (see below), whose sum is σ = 72156085462044. Its totient is φ = 64138742632896.

The previous prime is 68147414047463. The next prime is 68147414047483. The reversal of 68147414047469 is 96474041474186.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 45440406902500 + 22707007144969 = 6740950^2 + 4765187^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68147414047469 is a prime.

It is a super-2 number, since 2×68147414047469² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68147414047463) 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, 2004335707262 + ... + 2004335707295.

It is an arithmetic number, because the mean of its divisors is an integer number (18039021365511).

Almost surely, 2^{68147414047469} is an apocalyptic number.

It is an amenable number.

68147414047469 is a deficient number, since it is larger than the sum of its proper divisors (4008671414575).

68147414047469 is a wasteful number, since it uses less digits than its factorization.

68147414047469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4008671414574.

The product of its (nonzero) digits is 130056192, while the sum is 65.

The spelling of 68147414047469 in words is "sixty-eight trillion, one hundred forty-seven billion, four hundred fourteen million, forty-seven thousand, four hundred sixty-nine".