12971068545 has 16 divisors (see below), whose sum is σ = 20764244160. Its totient is φ = 6914391744.

The previous prime is 12971068541. The next prime is 12971068559. The reversal of 12971068545 is 54586017921.

It is a happy number.

It is not a de Polignac number, because 12971068545 - 2² = 12971068541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12971068494 and 12971068503.

It is not an unprimeable number, because it can be changed into a prime (12971068541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188794 + ... + 248163.

It is an arithmetic number, because the mean of its divisors is an integer number (1297765260).

Almost surely, 2^12971068545 is an apocalyptic number.

12971068545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12971068545 is a deficient number, since it is larger than the sum of its proper divisors (7793175615).

12971068545 is a wasteful number, since it uses less digits than its factorization.

12971068545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438944.

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 12971068545 in words is "twelve billion, nine hundred seventy-one million, sixty-eight thousand, five hundred forty-five".