12980662078 has 4 divisors (see below), whose sum is σ = 19470993120. Its totient is φ = 6490331038.

The previous prime is 12980662061. The next prime is 12980662133. The reversal of 12980662078 is 87026608921.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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, 3245165518 + ... + 3245165521.

It is an arithmetic number, because the mean of its divisors is an integer number (4867748280).

Almost surely, 2^12980662078 is an apocalyptic number.

12980662078 is a deficient number, since it is larger than the sum of its proper divisors (6490331042).

12980662078 is an equidigital number, since it uses as much as digits as its factorization.

12980662078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6490331041.

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 12980662078 in words is "twelve billion, nine hundred eighty million, six hundred sixty-two thousand, seventy-eight".