12961271416 has 8 divisors (see below), whose sum is σ = 24302383920. Its totient is φ = 6480635704.

The previous prime is 12961271371. The next prime is 12961271417. The reversal of 12961271416 is 61417216921.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12961271417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 810079456 + ... + 810079471.

It is an arithmetic number, because the mean of its divisors is an integer number (3037797990).

Almost surely, 2^12961271416 is an apocalyptic number.

It is an amenable number.

12961271416 is a deficient number, since it is larger than the sum of its proper divisors (11341112504).

12961271416 is a wasteful number, since it uses less digits than its factorization.

12961271416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620158933 (or 1620158929 counting only the distinct ones).

The product of its digits is 36288, while the sum is 40.

The spelling of 12961271416 in words is "twelve billion, nine hundred sixty-one million, two hundred seventy-one thousand, four hundred sixteen".