12919078989 has 32 divisors (see below), whose sum is σ = 19933620480. Its totient is φ = 8261870400.

The previous prime is 12919078933. The next prime is 12919078993. The reversal of 12919078989 is 98987091921.

It is not a de Polignac number, because 12919078989 - 2¹¹ = 12919076941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12919078589) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20142 + ... + 161999.

It is an arithmetic number, because the mean of its divisors is an integer number (622925640).

Almost surely, 2^12919078989 is an apocalyptic number.

It is an amenable number.

12919078989 is a deficient number, since it is larger than the sum of its proper divisors (7014541491).

12919078989 is a wasteful number, since it uses less digits than its factorization.

12919078989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182258 (or 182252 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 63.

The spelling of 12919078989 in words is "twelve billion, nine hundred nineteen million, seventy-eight thousand, nine hundred eighty-nine".