11057730491 has 4 divisors (see below), whose sum is σ = 11057997192. Its totient is φ = 11057463792.

The previous prime is 11057730449. The next prime is 11057730503. The reversal of 11057730491 is 19403775011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11057730491 is a prime.

It is a super-2 number, since 2×11057730491² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11057700491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56330 + ... + 159023.

It is an arithmetic number, because the mean of its divisors is an integer number (2764499298).

Almost surely, 2^11057730491 is an apocalyptic number.

11057730491 is a deficient number, since it is larger than the sum of its proper divisors (266701).

11057730491 is an equidigital number, since it uses as much as digits as its factorization.

11057730491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266700.

The product of its (nonzero) digits is 26460, while the sum is 38.

The spelling of 11057730491 in words is "eleven billion, fifty-seven million, seven hundred thirty thousand, four hundred ninety-one".