278325314121 has 8 divisors (see below), whose sum is σ = 371136478720. Its totient is φ = 185532179472.

The previous prime is 278325314077. The next prime is 278325314123. The reversal of 278325314121 is 121413523872.

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

It is not a de Polignac number, because 278325314121 - 2¹⁷ = 278325183049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 278325314121.

It is not an unprimeable number, because it can be changed into a prime (278325314123) 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 7 ways as a sum of consecutive naturals, for example, 4471426 + ... + 4533243.

It is an arithmetic number, because the mean of its divisors is an integer number (46392059840).

Almost surely, 2^278325314121 is an apocalyptic number.

It is an amenable number.

278325314121 is a deficient number, since it is larger than the sum of its proper divisors (92811164599).

278325314121 is a wasteful number, since it uses less digits than its factorization.

278325314121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9014975.

The product of its digits is 80640, while the sum is 39.

Adding to 278325314121 its reverse (121413523872), we get a palindrome (399738837993).

The spelling of 278325314121 in words is "two hundred seventy-eight billion, three hundred twenty-five million, three hundred fourteen thousand, one hundred twenty-one".