11198052091 has 2 divisors, whose sum is σ = 11198052092. Its totient is φ = 11198052090.

The previous prime is 11198052079. The next prime is 11198052157. The reversal of 11198052091 is 19025089111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11198052091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11198052091.

It is not a weakly prime, because it can be changed into another prime (11198002091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5599026045 + 5599026046.

It is an arithmetic number, because the mean of its divisors is an integer number (5599026046).

Almost surely, 2^11198052091 is an apocalyptic number.

11198052091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11198052091 is an equidigital number, since it uses as much as digits as its factorization.

11198052091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 37.

The spelling of 11198052091 in words is "eleven billion, one hundred ninety-eight million, fifty-two thousand, ninety-one".