11011111110997 has 2 divisors, whose sum is σ = 11011111110998. Its totient is φ = 11011111110996.

The previous prime is 11011111110983. The next prime is 11011111111067. The reversal of 11011111110997 is 79901111111011.

11011111110997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10098323861796 + 912787249201 = 3177786^2 + 955399^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11011111110997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11011111110917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505555555498 + 5505555555499.

It is an arithmetic number, because the mean of its divisors is an integer number (5505555555499).

Almost surely, 2^{11011111110997} is an apocalyptic number.

It is an amenable number.

11011111110997 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011111110997 is an equidigital number, since it uses as much as digits as its factorization.

11011111110997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 567, while the sum is 34.

The spelling of 11011111110997 in words is "eleven trillion, eleven billion, one hundred eleven million, one hundred ten thousand, nine hundred ninety-seven".