11972945355347 has 2 divisors, whose sum is σ = 11972945355348. Its totient is φ = 11972945355346.

The previous prime is 11972945355311. The next prime is 11972945355361. The reversal of 11972945355347 is 74355354927911.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11972945355347 - 2¹⁸ = 11972945093203 is a prime.

It is not a weakly prime, because it can be changed into another prime (11972945354347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5986472677673 + 5986472677674.

It is an arithmetic number, because the mean of its divisors is an integer number (5986472677674).

Almost surely, 2^{11972945355347} is an apocalyptic number.

11972945355347 is a deficient number, since it is larger than the sum of its proper divisors (1).

11972945355347 is an equidigital number, since it uses as much as digits as its factorization.

11972945355347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884000, while the sum is 65.

The spelling of 11972945355347 in words is "eleven trillion, nine hundred seventy-two billion, nine hundred forty-five million, three hundred fifty-five thousand, three hundred forty-seven".