11650828991 has 2 divisors, whose sum is σ = 11650828992. Its totient is φ = 11650828990.

The previous prime is 11650828979. The next prime is 11650829023. The reversal of 11650828991 is 19982805611.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11650828991 is a prime.

It is a super-3 number, since 3×11650828991³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11650828901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5825414495 + 5825414496.

It is an arithmetic number, because the mean of its divisors is an integer number (5825414496).

Almost surely, 2^11650828991 is an apocalyptic number.

11650828991 is a deficient number, since it is larger than the sum of its proper divisors (1).

11650828991 is an equidigital number, since it uses as much as digits as its factorization.

11650828991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 50.

The spelling of 11650828991 in words is "eleven billion, six hundred fifty million, eight hundred twenty-eight thousand, nine hundred ninety-one".