12971852210909 has 8 divisors (see below), whose sum is σ = 12977736321312. Its totient is φ = 12965969349360.

The previous prime is 12971852210869. The next prime is 12971852210923. The reversal of 12971852210909 is 90901225817921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12971852210909 - 2¹² = 12971852206813 is a prime.

It is a super-2 number, since 2×12971852210909² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12971852210929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20788667 + ... + 21403559.

It is an arithmetic number, because the mean of its divisors is an integer number (1622217040164).

Almost surely, 2^{12971852210909} is an apocalyptic number.

It is an amenable number.

12971852210909 is a deficient number, since it is larger than the sum of its proper divisors (5884110403).

12971852210909 is an equidigital number, since it uses as much as digits as its factorization.

12971852210909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624427.

The product of its (nonzero) digits is 1632960, while the sum is 56.

The spelling of 12971852210909 in words is "twelve trillion, nine hundred seventy-one billion, eight hundred fifty-two million, two hundred ten thousand, nine hundred nine".