11551983767923 has 2 divisors, whose sum is σ = 11551983767924. Its totient is φ = 11551983767922.

The previous prime is 11551983767897. The next prime is 11551983767927. The reversal of 11551983767923 is 32976738915511.

11551983767923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11551983767923 is a prime.

It is not a weakly prime, because it can be changed into another prime (11551983767927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5775991883961 + 5775991883962.

It is an arithmetic number, because the mean of its divisors is an integer number (5775991883962).

Almost surely, 2^{11551983767923} is an apocalyptic number.

11551983767923 is a deficient number, since it is larger than the sum of its proper divisors (1).

11551983767923 is an equidigital number, since it uses as much as digits as its factorization.

11551983767923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85730400, while the sum is 67.

The spelling of 11551983767923 in words is "eleven trillion, five hundred fifty-one billion, nine hundred eighty-three million, seven hundred sixty-seven thousand, nine hundred twenty-three".