11931051999073 has 2 divisors, whose sum is σ = 11931051999074. Its totient is φ = 11931051999072.

The previous prime is 11931051998903. The next prime is 11931051999089. The reversal of 11931051999073 is 37099915013911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11906723174544 + 24328824529 = 3450612^2 + 155977^2 .

It is a cyclic number.

It is not a de Polignac number, because 11931051999073 - 2³⁷ = 11793613045601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11931051998999 and 11931051999017.

It is not a weakly prime, because it can be changed into another prime (11931051999473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5965525999536 + 5965525999537.

It is an arithmetic number, because the mean of its divisors is an integer number (5965525999537).

Almost surely, 2^{11931051999073} is an apocalyptic number.

It is an amenable number.

11931051999073 is a deficient number, since it is larger than the sum of its proper divisors (1).

11931051999073 is an equidigital number, since it uses as much as digits as its factorization.

11931051999073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2066715, while the sum is 58.

The spelling of 11931051999073 in words is "eleven trillion, nine hundred thirty-one billion, fifty-one million, nine hundred ninety-nine thousand, seventy-three".