12780000278 has 8 divisors (see below), whose sum is σ = 20003478768. Its totient is φ = 6112174024.

The previous prime is 12780000239. The next prime is 12780000283. The reversal of 12780000278 is 87200008721.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138913001 + ... + 138913092.

It is an arithmetic number, because the mean of its divisors is an integer number (2500434846).

Almost surely, 2^12780000278 is an apocalyptic number.

12780000278 is a deficient number, since it is larger than the sum of its proper divisors (7223478490).

12780000278 is a wasteful number, since it uses less digits than its factorization.

12780000278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277826118.

The product of its (nonzero) digits is 12544, while the sum is 35.

Adding to 12780000278 its reverse (87200008721), we get a palindrome (99980008999).

The spelling of 12780000278 in words is "twelve billion, seven hundred eighty million, two hundred seventy-eight", and thus it is an aban number.