11817801053 has 2 divisors, whose sum is σ = 11817801054. Its totient is φ = 11817801052.

The previous prime is 11817801001. The next prime is 11817801071. The reversal of 11817801053 is 35010871811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9273304804 + 2544496249 = 96298^2 + 50443^2 .

It is a cyclic number.

It is not a de Polignac number, because 11817801053 - 2²⁶ = 11750692189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11817801553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5908900526 + 5908900527.

It is an arithmetic number, because the mean of its divisors is an integer number (5908900527).

Almost surely, 2^11817801053 is an apocalyptic number.

It is an amenable number.

11817801053 is a deficient number, since it is larger than the sum of its proper divisors (1).

11817801053 is an equidigital number, since it uses as much as digits as its factorization.

11817801053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 35.

The spelling of 11817801053 in words is "eleven billion, eight hundred seventeen million, eight hundred one thousand, fifty-three".