11365212973 has 2 divisors, whose sum is σ = 11365212974. Its totient is φ = 11365212972.

The previous prime is 11365212907. The next prime is 11365213001. The reversal of 11365212973 is 37921256311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11355459844 + 9753129 = 106562^2 + 3123^2 .

It is a cyclic number.

It is not a de Polignac number, because 11365212973 - 2⁹ = 11365212461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11365213973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5682606486 + 5682606487.

It is an arithmetic number, because the mean of its divisors is an integer number (5682606487).

Almost surely, 2^11365212973 is an apocalyptic number.

It is an amenable number.

11365212973 is a deficient number, since it is larger than the sum of its proper divisors (1).

11365212973 is an equidigital number, since it uses as much as digits as its factorization.

11365212973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 40.

The spelling of 11365212973 in words is "eleven billion, three hundred sixty-five million, two hundred twelve thousand, nine hundred seventy-three".