11659491027 has 8 divisors (see below), whose sum is σ = 17273320080. Its totient is φ = 7772994000.

The previous prime is 11659491001. The next prime is 11659491029. The reversal of 11659491027 is 72019495611.

It is not a de Polignac number, because 11659491027 - 2¹¹ = 11659488979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11659491029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215916474 + ... + 215916527.

It is an arithmetic number, because the mean of its divisors is an integer number (2159165010).

Almost surely, 2^11659491027 is an apocalyptic number.

11659491027 is a deficient number, since it is larger than the sum of its proper divisors (5613829053).

11659491027 is an equidigital number, since it uses as much as digits as its factorization.

11659491027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431833010 (or 431833004 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The spelling of 11659491027 in words is "eleven billion, six hundred fifty-nine million, four hundred ninety-one thousand, twenty-seven".