11111091983 has 2 divisors, whose sum is σ = 11111091984. Its totient is φ = 11111091982.

The previous prime is 11111091977. The next prime is 11111092001. The reversal of 11111091983 is 38919011111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11111091983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11111091913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555545991 + 5555545992.

It is an arithmetic number, because the mean of its divisors is an integer number (5555545992).

Almost surely, 2^11111091983 is an apocalyptic number.

11111091983 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111091983 is an equidigital number, since it uses as much as digits as its factorization.

11111091983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 35.

The spelling of 11111091983 in words is "eleven billion, one hundred eleven million, ninety-one thousand, nine hundred eighty-three".