10919555117 has 2 divisors, whose sum is σ = 10919555118. Its totient is φ = 10919555116.

The previous prime is 10919555111. The next prime is 10919555137. The reversal of 10919555117 is 71155591901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7012555081 + 3907000036 = 83741^2 + 62506^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10919555117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10919555111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5459777558 + 5459777559.

It is an arithmetic number, because the mean of its divisors is an integer number (5459777559).

Almost surely, 2^10919555117 is an apocalyptic number.

It is an amenable number.

10919555117 is a deficient number, since it is larger than the sum of its proper divisors (1).

10919555117 is an equidigital number, since it uses as much as digits as its factorization.

10919555117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70875, while the sum is 44.

The spelling of 10919555117 in words is "ten billion, nine hundred nineteen million, five hundred fifty-five thousand, one hundred seventeen".