78168293113 has 8 divisors (see below), whose sum is σ = 82769851080. Its totient is φ = 73567115520.

The previous prime is 78168293111. The next prime is 78168293123. The reversal of 78168293113 is 31139286187.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7580836624 + 70587456489 = 87068^2 + 265683^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78168293113 - 2¹ = 78168293111 is a prime.

It is a super-2 number, since 2×78168293113² (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 (78168293111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402423 + ... + 564163.

It is an arithmetic number, because the mean of its divisors is an integer number (10346231385).

Almost surely, 2^78168293113 is an apocalyptic number.

It is an amenable number.

78168293113 is a deficient number, since it is larger than the sum of its proper divisors (4601557967).

78168293113 is a wasteful number, since it uses less digits than its factorization.

78168293113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190187.

The product of its digits is 435456, while the sum is 49.

The spelling of 78168293113 in words is "seventy-eight billion, one hundred sixty-eight million, two hundred ninety-three thousand, one hundred thirteen".