11640411091 has 4 divisors (see below), whose sum is σ = 11649868384. Its totient is φ = 11630953800.

The previous prime is 11640411053. The next prime is 11640411103. The reversal of 11640411091 is 19011404611.

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

It is a cyclic number.

It is not a de Polignac number, because 11640411091 - 2¹³ = 11640402899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11640411791) 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, 4726800 + ... + 4729261.

It is an arithmetic number, because the mean of its divisors is an integer number (2912467096).

Almost surely, 2^11640411091 is an apocalyptic number.

11640411091 is a deficient number, since it is larger than the sum of its proper divisors (9457293).

11640411091 is an equidigital number, since it uses as much as digits as its factorization.

11640411091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9457292.

The product of its (nonzero) digits is 864, while the sum is 28.

The spelling of 11640411091 in words is "eleven billion, six hundred forty million, four hundred eleven thousand, ninety-one".