12719981061 has 12 divisors (see below), whose sum is σ = 18443169888. Its totient is φ = 8447742504.

The previous prime is 12719981047. The next prime is 12719981089. The reversal of 12719981061 is 16018991721.

It is a happy number.

It is not a de Polignac number, because 12719981061 - 2⁶ = 12719980997 is a prime.

It is a super-3 number, since 3×12719981061³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12719980998 and 12719981016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12719981161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2684575 + ... + 2689308.

It is an arithmetic number, because the mean of its divisors is an integer number (1536930824).

Almost surely, 2^12719981061 is an apocalyptic number.

It is an amenable number.

12719981061 is a deficient number, since it is larger than the sum of its proper divisors (5723188827).

12719981061 is a wasteful number, since it uses less digits than its factorization.

12719981061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5374152 (or 5374149 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 45.

The spelling of 12719981061 in words is "twelve billion, seven hundred nineteen million, nine hundred eighty-one thousand, sixty-one".