11861035699 has 4 divisors (see below), whose sum is σ = 12270036960. Its totient is φ = 11452034440.

The previous prime is 11861035687. The next prime is 11861035709. The reversal of 11861035699 is 99653016811.

11861035699 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99653016811 = 6211 ⋅16044601.

It is a cyclic number.

It is not a de Polignac number, because 11861035699 - 2²¹ = 11858938547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11861035619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204500587 + ... + 204500644.

It is an arithmetic number, because the mean of its divisors is an integer number (3067509240).

Almost surely, 2^11861035699 is an apocalyptic number.

11861035699 is a deficient number, since it is larger than the sum of its proper divisors (409001261).

11861035699 is an equidigital number, since it uses as much as digits as its factorization.

11861035699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409001260.

The product of its (nonzero) digits is 349920, while the sum is 49.

The spelling of 11861035699 in words is "eleven billion, eight hundred sixty-one million, thirty-five thousand, six hundred ninety-nine".