11975838533 has 2 divisors, whose sum is σ = 11975838534. Its totient is φ = 11975838532.

The previous prime is 11975838527. The next prime is 11975838569. The reversal of 11975838533 is 33583857911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8712915649 + 3262922884 = 93343^2 + 57122^2 .

It is a cyclic number.

It is not a de Polignac number, because 11975838533 - 2¹⁴ = 11975822149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11975838233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5987919266 + 5987919267.

It is an arithmetic number, because the mean of its divisors is an integer number (5987919267).

Almost surely, 2^11975838533 is an apocalyptic number.

It is an amenable number.

11975838533 is a deficient number, since it is larger than the sum of its proper divisors (1).

11975838533 is an equidigital number, since it uses as much as digits as its factorization.

11975838533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 53.

The spelling of 11975838533 in words is "eleven billion, nine hundred seventy-five million, eight hundred thirty-eight thousand, five hundred thirty-three".