278218798412 has 6 divisors (see below), whose sum is σ = 486882897228. Its totient is φ = 139109399204.

The previous prime is 278218798411. The next prime is 278218798457. The reversal of 278218798412 is 214897812872.

It is not an unprimeable number, because it can be changed into a prime (278218798411) 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 as a sum of consecutive naturals, namely, 34777349798 + ... + 34777349805.

It is an arithmetic number, because the mean of its divisors is an integer number (81147149538).

Almost surely, 2^278218798412 is an apocalyptic number.

It is an amenable number.

278218798412 is a deficient number, since it is larger than the sum of its proper divisors (208664098816).

278218798412 is a wasteful number, since it uses less digits than its factorization.

278218798412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69554699607 (or 69554699605 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 59.

The spelling of 278218798412 in words is "two hundred seventy-eight billion, two hundred eighteen million, seven hundred ninety-eight thousand, four hundred twelve".