12655180378 has 4 divisors (see below), whose sum is σ = 18982770570. Its totient is φ = 6327590188.

The previous prime is 12655180361. The next prime is 12655180381. The reversal of 12655180378 is 87308155621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87308155621 = 230189 ⋅379289.

It can be written as a sum of positive squares in only one way, i.e., 7944691689 + 4710488689 = 89133^2 + 68633^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3163795093 + ... + 3163795096.

Almost surely, 2^12655180378 is an apocalyptic number.

12655180378 is a deficient number, since it is larger than the sum of its proper divisors (6327590192).

12655180378 is an equidigital number, since it uses as much as digits as its factorization.

12655180378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6327590191.

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 12655180378 in words is "twelve billion, six hundred fifty-five million, one hundred eighty thousand, three hundred seventy-eight".