11655329899 has 4 divisors (see below), whose sum is σ = 11939606280. Its totient is φ = 11371053520.

The previous prime is 11655329857. The next prime is 11655329911. The reversal of 11655329899 is 99892355611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99892355611 = 113 ⋅884003147.

It is a cyclic number.

It is not a de Polignac number, because 11655329899 - 2¹¹ = 11655327851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11655329599) 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, 142138129 + ... + 142138210.

It is an arithmetic number, because the mean of its divisors is an integer number (2984901570).

Almost surely, 2^11655329899 is an apocalyptic number.

11655329899 is a deficient number, since it is larger than the sum of its proper divisors (284276381).

11655329899 is an equidigital number, since it uses as much as digits as its factorization.

11655329899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284276380.

The product of its digits is 5248800, while the sum is 58.

The spelling of 11655329899 in words is "eleven billion, six hundred fifty-five million, three hundred twenty-nine thousand, eight hundred ninety-nine".