11819680993 has 2 divisors, whose sum is σ = 11819680994. Its totient is φ = 11819680992.

The previous prime is 11819680963. The next prime is 11819681017. The reversal of 11819680993 is 39908691811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8588099584 + 3231581409 = 92672^2 + 56847^2 .

It is a cyclic number.

It is not a de Polignac number, because 11819680993 - 2¹⁷ = 11819549921 is a prime.

It is not a weakly prime, because it can be changed into another prime (11819680903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5909840496 + 5909840497.

It is an arithmetic number, because the mean of its divisors is an integer number (5909840497).

Almost surely, 2^11819680993 is an apocalyptic number.

It is an amenable number.

11819680993 is a deficient number, since it is larger than the sum of its proper divisors (1).

11819680993 is an equidigital number, since it uses as much as digits as its factorization.

11819680993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 55.

The spelling of 11819680993 in words is "eleven billion, eight hundred nineteen million, six hundred eighty thousand, nine hundred ninety-three".