78334147369 has 4 divisors (see below), whose sum is σ = 78337315840. Its totient is φ = 78330978900.

The previous prime is 78334147361. The next prime is 78334147379. The reversal of 78334147369 is 96374143387.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96374143387 = 156139 ⋅617233.

It is a cyclic number.

It is not a de Polignac number, because 78334147369 - 2³ = 78334147361 is a prime.

It is a super-2 number, since 2×78334147369² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78334147361) 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, 1546857 + ... + 1596694.

It is an arithmetic number, because the mean of its divisors is an integer number (19584328960).

Almost surely, 2^78334147369 is an apocalyptic number.

It is an amenable number.

78334147369 is a deficient number, since it is larger than the sum of its proper divisors (3168471).

78334147369 is a wasteful number, since it uses less digits than its factorization.

78334147369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3168470.

The product of its digits is 9144576, while the sum is 55.

The spelling of 78334147369 in words is "seventy-eight billion, three hundred thirty-four million, one hundred forty-seven thousand, three hundred sixty-nine".